Definify.com
Webster 1913 Edition
Bug
1.
A bugbear; anything which terrifies.
[Obs.]
Sir, spare your threats:
The
The
bug
which you would fright me with I seek. Shakespeare
2.
(Zool.)
A general name applied to various insects belonging to the Hemiptera;
as, the squash
bug
; the chinch bug
, etc.4.
(Zool.)
One of various species of Coleoptera;
as, the lady
. bug
; potato bug
, etc.; loosely, any beetle5.
(Zool.)
One of certain kinds of Crustacea;
as, the sow
bug
; pill bug
; bait bug
; salve bug
, etc.Webster 1828 Edition
Bug
BUG
,Noun.