noun
plural troughs
[count] a long, shallow container from which animals (such as cows, pigs, horses, etc.) eat or drink
a period in which there is little economic activity and prices are usually low
a long, low area between waves or hills
weather :a long, narrow area of low air pressure between two areas of higher pressure - compare ridge
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
US