say it: trawf
trough is a noun meaning "a narrow depression (as in the earth or between ocean waves or in the ocean bed)". It carries 6 recorded senses.
a narrow depression (as in the earth or between ocean waves or in the ocean bed)
a concave shape with an open top
a treasury for government funds
a long narrow shallow receptacle
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for trough come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.