Hypertext Webster Gateway: "palpus"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Palpus \Pal"pus\, n.; pl. {Palpi}. [NL. See {Palp}.] (Zo["o]l.)
A feeler; especially, one of the jointed sense organs
attached to the mouth organs of insects, arachnids,
crustaceans, and annelids; as, the mandibular palpi,
maxillary palpi, and labial palpi. The palpi of male spiders
serve as sexual organs. Called also {palp}. See Illust. of
{Arthrogastra} and {Orthoptera}.
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