on (one's) Jack
on (one's) Jack
old-fashioned Alone, abandoned, or isolated; on one's own. Primarily heard in UK. Coming home from the war, many veterans felt as though they were on their Jack as they tried to re-enter civilian life.
Farlex Dictionary of Idioms. © 2024 Farlex, Inc, all rights reserved.
on your Jack
on your own. British informal This an abbreviation of the rhyming slang expression on your Jack Jones .
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