silo

[ sahy-loh ]
/ ˈsaɪ loʊ /

noun, plural si·los.

a structure, typically cylindrical, in which fodder or forage is kept.
a pit or underground space for storing grain, green feeds, etc.
Military. an underground installation constructed of concrete and steel, designed to house a ballistic missile and the equipment for firing it.

verb (used with object), si·loed, si·lo·ing.

to put into or preserve in a silo.

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Origin of silo

First recorded in 1825–35; from Spanish: “place for storing grain, hay, etc.,” originally, “subterranean”; further origin uncertain
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

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British Dictionary definitions for silo

silo
/ (ˈsaɪləʊ) /

noun plural -los

a pit, trench, horizontal container, or tower, often cylindrical in shape, in which silage is made and stored
a strengthened underground position in which missile systems are sited for protection against attack

Word Origin for silo

C19: from Spanish, perhaps from Celtic
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012