let one loose

let (someone or something) loose

To make free or give up control of something or someone; to release or discharge something or someone, as from confinement. Due to a lack of evidence, the suspects were let loose by police. Samantha was suspended for letting mice loose throughout the school.
See also: let, loose

let one loose

To pass gas through one's anus; to fart. It smells like someone let one loose in the elevator when I walked in. Gross! Don't go letting one loose at the dinner table like that, Tom!
See also: let, loose, one
References in periodicals archive ?
``They let one loose. It grabbed Benji by the neck in a vice-lock.
But I was determined not to let one loose shot spoil my tournament, though I admit I thought I was looking at second place at the time.