Meaning of TROUGH in English
transcription, транскрипция: [ trɒf, AM trɔ:f ]
A trough is a long narrow container from which farm animals drink or eat.
A trough is a low area between two big waves on the sea.
The boat rolled heavily in the troughs between the waves.
A trough is a low point in a process that has regular high and low points, for example a period in business when people do not produce as much as usual.
Looking back afterwards you will see that this was not a terminal trough in your career...
A trough of low pressure is a long narrow area of low air pressure between two areas of higher pressure. ( TECHNICAL )
Collins COBUILD Advanced Learner's English Dictionary. Английский словарь Коллинз COBUILD для изучающих язык на продвинутом уровне. 2006