Using one's left hand in preference to, or more skillfully than, one's right. / Intended to be worn on, or used by, the left hand. / Turning or spiraling from right to left; anticlockwise.

Left-handed people, taken as a whole.

(politics) The more left-wing faction of a group or party. / (sports) The left-hand side of a sports field. / (ice hockey) The offensive player who plays to the center's left.

of, relating to, or located on the left / designed for use by the left hand / in the opposite direction or orientation to the right-hand rule

(politics) Of political ideologies: favoring political, social, and economic equality.

(Canada, US) All over the place; indiscriminately; frequently or excessively. / recklessly; irrespective, regardless anything or anyone (spending money etc.).

simple past tense and past participle of leave over

(intransitive, Canada, US slang) To turn left, to take a left turn.

A person who espouses left-wing political views. / A member of the left wing of a party or group. / (sports) A person who plays the position of left wing.

(baseball) The outfield defensive player that stands to the left of the center fielder as viewed from home plate.