trough

noun

1.
a narrow depression (as in the earth or between ocean waves or in the ocean bed)
2.
a channel along the eaves or on the roof; collects and carries away rainwater
eavestrough gripple leaderhead rone strind gutter
3.
a concave shape with an open top
gowpen bowl
4.
a treasury for government funds
public treasury till
5.
a long narrow shallow receptacle
trogue water trough
6.
a container (usually in a barn or stable) from which cattle or horses feed
water trough manger