Synonym: apartment, dull, even, horizontal, level, lifeless, off-key, smooth, suite, unmusical. Antonym: bumpy, rough, sharp, uneven. Similar words: inflation, flag, flash, flame, flavor, flare up, flamboyant, late. Meaning: [flæt] 
n. 1. a level tract of land 2. a shallow box in which seedlings are started 3. a musical notation indicating one half step lower than the note named 4. freight car without permanent sides or roof 5. a deflated pneumatic tire 6. scenery consisting of a wooden frame covered with painted canvas; part of a stage setting 7. a suite of rooms usually on one floor of an apartment house. adj. 1. having a surface without slope, tilt in which no part is higher or lower than another 2. having a relatively broad surface in relation to depth or thickness 3. not modified or restricted by reservations 4. stretched out and lying at full length along the ground 5. lacking contrast or shading between tones 6. lowered in pitch by one chromatic semitone 7. flattened laterally along the whole length (e.g., certain leafstalks or flatfishes) 8. lacking taste or flavor or tang 9. lacking stimulating characteristics; uninteresting 10. having lost effervescence 11. (of taxes) not increasing as the amount taxed increases 12. sounded or spoken in a tone unvarying in pitch 13. horizontally level 14. lacking the expected range or depth; not designed to give an illusion or depth 15. (of a tire) completely or partially deflated 16. not reflecting light; not glossy 17. commercially inactive. adv. 1. with flat sails 2. in a forthright manner; candidly or frankly.
n. 1. a level tract of land 2. a shallow box in which seedlings are started 3. a musical notation indicating one half step lower than the note named 4. freight car without permanent sides or roof 5. a deflated pneumatic tire 6. scenery consisting of a wooden frame covered with painted canvas; part of a stage setting 7. a suite of rooms usually on one floor of an apartment house. adj. 1. having a surface without slope, tilt in which no part is higher or lower than another 2. having a relatively broad surface in relation to depth or thickness 3. not modified or restricted by reservations 4. stretched out and lying at full length along the ground 5. lacking contrast or shading between tones 6. lowered in pitch by one chromatic semitone 7. flattened laterally along the whole length (e.g., certain leafstalks or flatfishes) 8. lacking taste or flavor or tang 9. lacking stimulating characteristics; uninteresting 10. having lost effervescence 11. (of taxes) not increasing as the amount taxed increases 12. sounded or spoken in a tone unvarying in pitch 13. horizontally level 14. lacking the expected range or depth; not designed to give an illusion or depth 15. (of a tire) completely or partially deflated 16. not reflecting light; not glossy 17. commercially inactive. adv. 1. with flat sails 2. in a forthright manner; candidly or frankly. 
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241) All flat jockeys are required to wear a back and chest protector.
242) They moved off campus to share a flat in the town.
243) A man walked in off the street and fell flat on his face, unconscious.
244) Place the material on a flat surface, shiny side uppermost.
245) Lift the fish and carefully place it on a large board, flat side uppermost.
246) He's moved up in the world in the last few years, and his new flat shows it.
246) Sentencedict.com is a online sentence dictionary, on which you can find excellent sentences for a large number of words.
247) The landlord had the right of entry to the flat with due warning.
248) After a moment his right hand moved across the cloth, smoothing it flat.
249) He flung himself down in the flat submissive posture of a mere supplicant.
250) The rent charged depends largely on the size and locality of the flat.
251) For several years she operated a dating agency from her basement flat.
252) She's been flat on her back for over a week now.
253) She made/put in a bid of £69 000 for the flat, which was accepted.
254) They hadn't found a scrap of evidence though they had turned his flat inside out.
255) He put both hands flat on the door and pushed as hard as he could.
256) I was rushing around madly tidying up the flat before they arrived.
257) A schoolgirl rushed into a burning flat to save a man's life.
258) A flat tyre today of all days what bad luck!
259) You can opt to pay a flat rate for unlimited Internet access.
260) She was out of bed, dressed and at the breakfast table in 50 seconds flat.
261) The flat is very central-just five minutes from Princes Street.
262) The idea that the earth is flat has long been discredited.
263) Acrylic paints can be used to create large, flat blocks of colour.
264) My landlord's given me a week to clear out of my flat.
265) We managed to get to the station in five minutes flat.
266) The boy thought the world was flat until I enlightened him!
267) They pressed themselves flat against the tunnel wall as the train approached.
268) When I got a flat tyre I had to wait for my boyfriend to come and help me, like a true damsel in distress!
269) To the north lie the flat and fertile farmlands of the Solway plain.
270) He lives alone in a suspiciously tidy flat in Notting Hill Gate.