Piercer
Piercer , noun
1.
One who, or that which, pierces or perforates
(a)
An instrument used in forming eyelets; a stiletto.
(b)
A piercel.
2.
(a) (Zoology) The ovipositor, or sting, of an insect.
(b)
(Zoology) An insect provided with an ovipositor.