mousetrap gun
English
Noun
mousetrap
gun
(
plural
mousetrap guns
)
(
weaponry
,
historical
)
A
device
patented
by James Alexander Williams in 1882,
consisting
of a
frame
with a
handgun
or
revolver
rigged
to
fire
when
triggered
by an
animal
stepping
on a
treadle
.