Bible Encyclopedias
Motley

1911 Encyclopedia Britannica

i.e. MOTLEY of many colours, a term particularly used of the parti-coloured dress of the professional "fool" (q.v.) of the middle and later ages. The origin of the word is probably to be found in "mote" (0. Eng. mot), a particle of dust, &c., hence a spot or patch. "Mottle," a blotch or spot, is probably a back formation of motley.

Bibliography Information
Chisholm, Hugh, General Editor. Entry for 'Motley'. 1911 Encyclopedia Britanica. https://www.studylight.org/​encyclopedias/​eng/​bri/​m/motley.html. 1910.