Webster's Revised Unabridged Dictionary · 1913

Jimmy

Jimmy , noun

[Compare Jemmy.]

A short crowbar used by burglars in breaking open doors.

jimmy , noun

[Rhyming slang: Jimmy Grant, for immigrant. RHUD]

An immigrant. [Australian slang] — RHUD

jimmy , transitive verb

To pry open (a door, window, etc.) with a jimmy or similar device; often used with open; as, the burglar jimmied open the back door and stole the TV set.