Antonym: crest. Similar words: rough, roughly, borough, through, drought, brought, wrought, go through. Meaning: [trɔf /trɒf] 
n. 1. a narrow depression (as in the earth or between ocean waves or in the ocean bed) 2. a channel along the eaves or on the roof; collects and carries away rainwater 3. a concave shape with an open top 4. a treasury for government funds 5. a long narrow shallow receptacle 6. a container (usually in a barn or stable) from which cattle or horses feed.
n. 1. a narrow depression (as in the earth or between ocean waves or in the ocean bed) 2. a channel along the eaves or on the roof; collects and carries away rainwater 3. a concave shape with an open top 4. a treasury for government funds 5. a long narrow shallow receptacle 6. a container (usually in a barn or stable) from which cattle or horses feed. 
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181. After that, an approaching mid-latitude trough is expected to induce a weakness in the subtropical ridge, allowing FITOW to recurve.
182. Wilbur watched him disappear into his tunnel. In a moment he saw the rat's sharp nose poke out from underneath the wooden trough.
183. For each song, Wang recorded only the peak and trough of frequency in every 10 - millisecond segment.
184. Regarding the Shandong Luneng near future murkiness , Cheng Yaodong will use "the trough time" this word to make the illustration for the match.
185. Concerning the autumn type, because Ural trough meets Aleutian trough over northeast China in summer there is a high possibility for low temperature and pluvial damages.
More similar words: rough, roughly, borough, through, drought, brought, wrought, go through, thorough, get through, through to, see through, all through, throughout, fall through, thoroughly, cut through, run through, come through, put through, look through, overwrought, pass through, pull through, break through, breakthrough, carry through, follow through, glance through, go through fire and water.