Definition of creeper
1
: one that creeps: such as
a
: a creeping plant
b
: a bird (as of the family Certhiidae) that creeps about on trees or bushes searching for insects
c
: a creeping insect or reptile
2
: any of various devices used for creeping: such as
a
: a fixture with iron points worn on the shoe to prevent slipping
b
: a low wheeled platform for supporting the body when working under an automobile
3
: a usually one-piece garment for a child at the crawling age
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Merriam-Webster unabridged
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Time Traveler for creeper
The first known use of creeper was before the 12th century
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