资料来源 : Webster's Revised Unabridged Dictionary (1913)

Averruncator \Av`er*run*ca"tor\, n.
   An instrument for pruning trees, having two blades, or a
   blade and a hook, fixed on a long rod and operated by a
   string or wire.

Averruncator \Av`er*run*ca"tor\, n. [Cf. {Aberuncator}.]
   An instrument for pruning trees, consisting of two blades, or
   a blade and a hook, fixed on the end of a long rod.