Main Entry: si·lo

Pronunciation: \ˈsī-(ˌ)lō\

Function: noun

Inflected Form(s): plural silos

Etymology: Spanish

Date: 1856

1 : a trench, pit, or especially a tall cylinder (as of wood or concrete) usually sealed to exclude air and used for making and storing silage
2 a : a deep bin for storing material (as coal) b : an underground structure for housing a guided missile

[silo illustration]