See #3 below.
to miss from one's possession or from a customary or supposed place; to suffer deprivation of : part with especially in an unforeseen or accidental manner; to suffer loss through the death or removal of or final separation from (a person)… See the full definition
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lose verb
\ ˈlüz \
lost\ ˈlȯst \; losing\ ˈlü-ziŋ \
Essential Meaning of lose
1: to be unable to find (something or someone)
She's always losing her gloves.
Don't lose your keys.
2: to fail to win (a game, contest, etc.)
lose a battle/game
She lost her bid for reelection. [=she failed to win the election; she was not reelected]
3: to fail to keep or hold (something wanted or valued)
lose an advantage
The country lost its independence 50 years ago.
continued:
Full Definition of lose
transitive verb
1a: to bring to destruction —used chiefly in passive construction
the ship was lost on the reef
b: DAMN
if he shall gain the whole world and lose his own soul
— Matthew 16:26 (King James Version)
2: to miss from one's possession or from a customary or supposed place
lost his glove
3: to suffer deprivation of : part with especially in an unforeseen or accidental manner
lost his leg in an auto accident
4a: to suffer loss through the death or removal of or final separation from (a person)
lost a son in the war
b:
to fail to keep control of or allegiance (see ALLEGIANCE sense 2) of
lose votes
lost his temper
5a: to fail to use : let slip by : WASTE
no time to lose
b(1): to fail to win, gain, or obtain
lose a prize
lose a contest
(2): to undergo defeat in
lost every battle
c: to fail to catch with the senses or the mind
lost what she said
6: to cause the loss of
7:
to fail to keep, sustain, or maintain
lost my balance
8a: to cause to miss one's way or bearings
lost himself in the maze of streets
b: to make (oneself) withdrawn from immediate reality
lost herself in daydreaming
9a: to wander or go astray from
lost his way
b: to draw away from : OUTSTRIP
lost his pursuers
10:
to fail to keep in sight or in mind
lost the thief in the crowded street
11: to free oneself from : get rid of
dieting to lose weight
12slang : REGURGITATE, VOMIT —often used in such phrases as lose one's lunch