Definition of putter-on:
(n) :
(golf) A golf club specifically intended for a putt.
(n) :
(golf) A person who is taking a putt or putting.
(v) :
(intransitive) To be active, but not excessively busy, at a task or a series of tasks.
(n) :
One who puts or places.
(n) :
A shot-putter.
(n) :
(mining) One who pushes the small wagons in a coal mine, to transport the coal mined by the getter.