[count] 1 : a long, shallow container from which animals (such as cows, pigs, horses, etc.) eat or drink
▪ a water trough2 : a period in which there is little economic activity and prices are usually low
▪ The economy/business is in a trough right now.3 : a long, low area between waves or hills4 weather : a long, narrow area of low air pressure between two areas of higher pressure — compare ridge 4
▪ a water trough
▪ The economy/business is in a trough right now.
have/get your nose/snout in the trough
Brit, disapproving : to be in or get into a situation in which you are getting or trying to get a lot of money