say it: SAHY-loh
silo is a noun meaning "a cylindrical tower used for storing silage". It carries 2 recorded senses.
a cylindrical tower used for storing silage
military installation consisting of an underground structure where ballistic missiles can be stored and fired
military
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for silo come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.