A locomotive, which is a powered rail vehicle used for pulling trains. The old steam loco was a popular attraction at the railway museum.
A poisonous leguminous plant (especially of the genera Astragalus and Oxytropis) that causes neurological disorders in livestock; locoweed. The ranchers lost several cattle after they grazed on loco.
A large edible Chilean marine gastropod (Concholepas concholepas), considered a delicacy. We tasted fresh locos during our trip to Chile.