Definify.com
Webster 1913 Edition
Piercer
Pier′cer
,Noun.
1.
One who, or that which, pierces or perforates
; specifically: (a)
An instrument used in forming eyelets; a stiletto.
(b)
A piercel.
2.
(Zool.)
(a)
The ovipositor, or sting, of an insect.
(b)
An insect provided with an ovipositor.
Webster 1828 Edition
Piercer
PIERCER
,Noun.
1.
One that pierces or perforates.