• Webster's Revised Unabridged Dictionary
    • n Proleg (Zoöl) One of the fleshy legs found on the abdominal segments of the larvæ of Lepidoptera, sawflies, and some other insects. Those of Lepidoptera have a circle of hooks. Called also proped propleg, and falseleg.
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Century Dictionary and Cyclopedia
    • n proleg In entomology, a false leg; a proped; one of the abdominal limbs or ambulatory processes of the larvæ of insects, usually fleshy and always distinct from the true thoracic legs. The ten posterior legs of a caterpillar of ordinary form are prolegs. Also called prop-leg. See also cut under Amara.
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Chambers's Twentieth Century Dictionary
    • n Proleg prō′leg one of the abdominal limbs of the larvæ of insects.
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Webster's Revised Unabridged Dictionary
Pref. pro-, for, in place of + leg,


In literature:

After the first month it becomes of a yellowish green; head, pale brown; feet and prolegs of nearly the same color.
"Scientific American, Volume XXIV., No. 12, March 18, 1871" by Various
Only the head and six prolegs of the occupant ever emerge from its case.
"My Studio Neighbors" by William Hamilton Gibson
All Geometrae, whose larvae resemble twigs as they stand out from the plant on their anal prolegs, are invariably eaten.
"Contributions to the Theory of Natural Selection" by Alfred Russel Wallace
Crotchets: the curved spines or hooks on the prolegs of caterpillars and on the cremaster of pupae.
"Explanation of Terms Used in Entomology" by John. B. Smith
How many prolegs has the caterpillar?
"A Guide for the Study of Animals" by Worrallo Whitney
At the hind end of the body there is another pair of prolegs similar in structure.
"Butterflies Worth Knowing" by Clarence M. Weed
Larvae eruciform, with rarely more than five pairs of abdominal prolegs.
"Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 4" by Various
Stallbaum, in his Proleg.
"Plato and the Other Companions of Sokrates, 3rd ed. Volume III (of 4)" by George Grote