trough
n 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 [syn: {gutter}]
3: a concave shape with an open top [syn: {basin}, {bowl}]
4: a treasury for government funds [syn: {public treasury}, {till}]
5: a container (usually in a barn or stable) from which cattle
or horses feed [syn: {manger}]