Definition of sweater ... of, for, or pertaining to a sweater: sweater yarn; sweater fashions. 2. made like a sweater: a sweater dress. Random House Unabridged Dictionary.

A simple three-piece pattern of a fleece sweater for a small- to medium-sized dog. ... Fleece Dog Sweater. I made this pull-on sweater for my dog to wear while laying around camp.