Putter \Putt"er\, n. (Golf)
   (a) A club with a short shaft and either a wooden or a metal head, used in putting.
   (b) One who putts.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Putter \Put"ter\, n.

1. One who puts or plates.

2. Specifically, one who pushes the small wagons in a coal mine, and the like. [Prov. Eng.]

Source: Webster's Revised Unabridged Dictionary (1913)
 

Putter \Put"ter\, v. i. [imp. & p. p. Puttered; p. pr. & vb. n. Puttering.]

[See Potter.]

To act inefficiently or idly; to trifle; to potter.

Source: Webster's Revised Unabridged Dictionary (1913)