Trough

calha

(a gutter under the eaves of a building)

cavado

(a linear atmospheric depression associated with a weather front)

cocheira

(a long, narrow, open container for feeding animals)

cocho

(a long, narrow, open container for feeding animals)

cocho

(a long, narrow container open at the top)

comedouro

(a long, narrow, open container for feeding animals)

vale

(a long, narrow depression between waves or ridges)