Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
trough [trɔf] n (also: drinking trough) коры́то; (also: feeding trough) корму́шка#; (channel) жёлоб; (low point) впа́дина
a trough of low pressure (METEOROLOGY) фронт ни́зкого давле́ния
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.
Русский: