[F. crapaudine (= Pr. and med.L. crapaudina, orig. adj. fem.), f. crapaud toad. The Fr. word has many derived and transferred applications, a few of which have to a slight extent been used in English.]
† 1. ? = TOADSTONE. Obs.
1558. Lanc. Wills, I. 182. On crapadyn ijd.
† 2. Farriery. (See quot.) Obs.
1730–6. Bailey (folio), Crapaudine (in Horses), an ulcer on the coronet; also, a tread upon the coronet.
1823. in Crabb, Tech. Dict.
3. A socket in which the pivot of a swing-door turns; whence crapaudine door.
1876. Gwilt, Archit., Gloss., Crapaudine Doors, those which turn on pivots at top and bottom.
