From The Collaborative International Dictionary of English v.0.48 [gcide]:
Creeper \Creep"er\ (kr[=e]p"[~e]r), n.
1. One who, or that which, creeps; any creeping thing.
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Standing waters are most unwholesome, . . . full of
mites, creepers; slimy, muddy, unclean. --Burton.
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2. (Bot.) A plant that clings by rootlets, or by tendrils, to
the ground, or to trees, etc.; as, the Virginia creeper
(Ampelopsis quinquefolia).
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3. (Zool.) A small bird of the genus Certhia, allied to the
wrens. The brown or common European creeper is {Certhia
familiaris}, a variety of which (var. Americana) inhabits
America; -- called also tree creeper and creeptree.
The American black and white creeper is Mniotilta varia.
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4. A kind of patten mounted on short pieces of iron instead
of rings; also, a fixture with iron points worn on a shoe
to prevent one from slipping.
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5. pl. A spurlike device strapped to the boot, which enables
one to climb a tree or pole; -- called often {telegraph
creepers}.
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6. A small, low iron, or dog, between the andirons.
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7. pl. An instrument with iron hooks or claws for dragging at
the bottom of a well, or any other body of water, and
bringing up what may lie there.
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8. Any device for causing material to move steadily from one
part of a machine to another, as an apron in a carding
machine, or an inner spiral in a grain screen.
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9. pl. (Arch.) Crockets. See Crocket.
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From WordNet (r) 3.0 (2006) [wn]:
creeper
n 1: any plant (as ivy or periwinkle) that grows by creeping
2: a person who crawls or creeps along the ground [syn:
crawler, creeper]
3: any of various small insectivorous birds of the northern
hemisphere that climb up a tree trunk supporting themselves
on stiff tail feathers and their feet [syn: creeper, {tree
creeper}]