"to conceal, hide," 1797, criminals' slang, of unknown origin, perhaps a blend of stow and cache. The noun meaning "hoard, cache" is 1914, from the verb. Slang sense of "personal supply of narcotics" is from 1942.
n. and stache. a mustache. : I cut my stash off because it was too much trouble to remember not to cut it off.
tv. to hide something (somewhere). : Stash this under the chair until I can think of a place to put it.
n. a concealed supply of drugs, especially marijuana; drugs and equipment to use them stored in a secret place. (Drugs.) : Albert's stash was never located by the fuzz.
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition. Copyright 2007. Published by McGraw Hill.
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