Synonyms for Trough (same or very similar meaning)
WordNet sense 1 (a concave shape with an open top):
bowlWordNet sense 2 (a treasury for government funds):
till, public treasuryWordNet sense 3 (a container (usually in a barn or stable) from which cattle or horses feed):
mangerWordNet sense 4 (a channel along the eaves or on the roof; collects and carries away rainwater):
gutterFrom the ODE community, based on WordNetadd/edit