stash it

verb

verb

Imperative, Obsolete, Slang Shut up; stop talking.

Leah blushed, and looked surprised and a little annoyed, for she saw that the other lady, Cora Nina, was intently regarding her and listening. "Stash it," said Bob, to his mate.1867, The Boys' Journal, volume 8, page 204:
"Manslaughter!" shrieked the prisoner. "Upon my—" "Oh, stash it!" said the constable, as he slammed the trap-door.1903, Frank Richardson, The Man who Lost His Past, page 122:

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