spongin
Third-person singular simple present indicative form of unfollow
plural of piledriver
(originally intransitive, of horses) To prance, frolic, gambol. / (intransitive) To move about carelessly, playfully or boisterously.
A horny, sulfur-containing protein, related to keratin, that forms the skeletal structure of certain classes of sponges. A proteinaceous compound of which the spicules in Demospongiae are composed.
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