Definify.com
Webster 1913 Edition
Outsider
Outˊsid′er
,Noun.
1.
One not belonging to the concern, institution, party, etc., spoken of; one disconnected in interest or feeling.
[Recent]
A. Trollope.
2.
A locksmith’s pinchers for grasping the point of a key in the keyhole, to open a door from the outside when the key is inside.
3.
A horse which is not a favorite in the betting.
[Cant]