simple past tense and past participle of leave alone

The most radical part of the political left wing.

plural of left bracket

plural of left ventricle

plural of left atrium

A left-handed person. / A motor vehicle with left-hand drive. / (UK, Ireland, colloquial, derogatory) A Roman Catholic, especially one of Irish descent.

plural of left-hander

(algebra) A subring which is closed under left-multiplication by any element of the ring.

plural of left back

(mathematics) A related function that, given the output of the original function returns the input that produced that output.