Synonym: cram, crowd, crush, heap, jelly, load, marmalade, press, push, squeeze, stuff. Similar words: pyjamas, pajamas, paper jam, jamboree, james polk, traffic jam, james madison. Meaning: [dʒæm] 
n. 1. preserve of crushed fruit 2. informal terms for a difficult situation 3. a dense crowd of people 4. deliberate radiation or reflection of electromagnetic energy for the purpose of disrupting enemy use of electronic devices or systems. v. 1. press tightly together or cram 2. push down forcibly 3. crush or bruise 4. interfere with or prevent the reception of signals 5. get stuck and immobilized 6. crowd or pack to capacity 7. block passage through.
n. 1. preserve of crushed fruit 2. informal terms for a difficult situation 3. a dense crowd of people 4. deliberate radiation or reflection of electromagnetic energy for the purpose of disrupting enemy use of electronic devices or systems. v. 1. press tightly together or cram 2. push down forcibly 3. crush or bruise 4. interfere with or prevent the reception of signals 5. get stuck and immobilized 6. crowd or pack to capacity 7. block passage through. 
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(1) They detoured around the traffic jam by heading south.
(2) He spread some strawberry jam on his toast.
(3) Heat the jam until it liquefies.
(4) He ate a whole pot of jam.
(5) Skim the jam and let it cool.
(6) She spread the toast thinly with raspberry jam.
(7) They've eaten a whole pot of jam!
(8) Put the jam in the jar over there.
(9) Do you think I can jam all these clothes in this suitcase?
(10) If you sell the jam jars at five dollars each(http://sentencedict.com),what will you make on the sale?
(11) The knives and forks were kept in a jam jar.
(12) Far too many football supporters tried to jam into the small ground.
(13) Skim the scum off the jam and let it cool.
(14) This strawberry jam is still runny: I can't get it to jell.
(15) Our coach was caught in a traffic jam and got to Heathrow forty minutes late.
(16) A 25 mile traffic jam clogged the northbound carriageway of the M6.
(17) The authorities were unable to jam this wavelength.
(18) Eat some proper food, not just toast and jam!
(19) The fruit can be made into jam.
(20) She ate two slices of toast spread with jam.
(21) The recipe uses a whole jarful/two jarfuls of jam.
(22) She pasted the apple jam upon the bread.
(23) We sat bumper-to-bumper in the traffic jam.
(24) Tempers flared as the traffic jam became worse.
(25) We were stuck in a jam for two hours.
(26) Hundreds of jam pots lined her scrubbed shelves.
(27) Serve by cutting the scones in half and spreading with jam and lashings of clotted cream.
(28) I read the information on the label before deciding which jam to buy.
(29) The root-ginger should be crushed up before it is added to the boiling jam.
(30) Sorry we're late. We got stuck in a traffic jam.