Thomas Davidson,
Chambers's Twentieth Century Dictionary 1908…
(1908)
“ Hobby, hob′i, n. a strong, active horse: a pacing horse: a subject on which one is constantly setting off, as in 'to ride' or 'to mount a hobby:' a favourite pursuit.—n. Hobb′y-horse, a stick or figure of a horse on which boys ride: one of the chief parts played in the ancient morris-dance: (Shak.) a term of contempt for a loose and frivolous person, male or female.—adj. ”
