Racktail

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Racktail \Rack"tail`\ (r[a^]k"t[=a]l`), n. (Horol.)
     An arm attached to a swinging notched arc or rack, to let off
     the striking mechanism of a repeating clock.
     [1913 Webster]