(databases) A join yielding a set of records for two tables, where all rows of the "left" table are enlisted with all rows of the "right" table, even if the join condition does not find any matching row on the "right".

simple past tense and past participle of leave a lot to be desired.

Alternative form of left-hand path

(idiomatic, humorous) Something is gone and never coming back.

(idiomatic) Lacking dexterity in either hand; being ambilevous / Used other than figuratively or idiomatically: see two, left, hands.

simple past tense and past participle of leave one's stamp

simple past tense and past participle of leave no stone unturned

(typography) A body of text aligned with both its left and right margins.

simple past tense and past participle of leave much to be desired

plural of allemande left