Etymology 1 
From Middle English left, luft, leoft, lift, lyft, from Old English left, lyft (“weak, useless”), from Proto-Germanic *luft- (compare Scots left (“left”), North Frisian lefts, leeft, leefts (“left”), West Frisian lofts (“left”), dialectal Dutch loof (“weak, worthless”), dialectal Low German lucht (“left”), from *lubjanan "to castrate, lop off" (compare dialectal English lib, West Frisian lobje, Dutch lubben), from Proto-Indo-European *(s)leup, *(s)lup "hanging limply". More at lob, lop.
left (comparative more left; lefter, superlative leftmost)
- The opposite of right; toward the west when one is facing north.
- Turn left at the corner.
- (politics) pertaining to the political left; liberal.
The fruit to the viewer's left
the west side of the body when one is facing north
pertaining to the political left; liberal
Derived terms 
left (not comparable)
- On the left side.
- Towards the left side.
left (plural lefts)
- The left side or direction.
- (politics) The ensemble of left-wing political parties. Those holding left-wing views as a group.
- The political left is not holding enough power.
- (boxing) A punch delivered with the left fist.
the ensemble of left-wing political parties
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Translations to be checked
Derived terms 
Etymology 2 
Middle English left, variant of laft (“remaining, left”), from Old English lǣfd, ġelǣfd, past participle of lǣfan (“to leave”). More at leave.
- simple past tense and past participle of leave
- There are only three cups of juice left.
Etymology 3 
From a verbal use of leave (“permission”), perhaps connected to Middle English leven (“to give leave to, permit, concede”), from Old English līefan, lȳfan (“to allow”). More at leave.
- (Ireland, colloquial) permitted, allowed to proceed.
- We were not left go to the beach after school except on a weekend.
- The Concise Dictionary of English Etymology, Walter W. Skeat.