OXFORD DICTIONARY
Silo, n. & v.
--n. (pl. -os)
1 a pit or airtight structure in which green crops are pressed and kept for fodder, undergoing fermentation.
2 a pit or tower for the storage of grain, cement, etc.
3 an underground chamber in which a guided missile is kept ready for firing.
--v.tr. (-oes, -oed) make silage of.
Sp. f. L sirus f. Gk siros corn-pit
THESAURUS
Silo
Mark, bazooka, calliope, crib, elevator, garner, grain bin, grain elevator, granary, hayloft, haymow, hayrick, hedgehog, launch pad, launching pad, launching platform, launching tube, mousetrap, mow, projector