ˈəŋkəs noun
( plural un·ci ˈənˌsī)
Etymology: New Latin, from Latin, hook, barb — more at angle
: hook , claw : as
a. : the anterior curved end of the hippocampal convolution
b. : the head of the malleus of the mastax in a rotifer that is often hooked or bears one or more teeth
c.
(1) : a median beaked plate or process dorsal to the copulatory apparatus of a male insect
(2) : an appendix of the copulatory bulb in a male spider