noun.
A partial wig or hairpiece worn to cover a bald spot.
noun.
A curl or lock of hair worn during the 1700s as a topknot on a periwig.
The Century Dictionary and Cyclopedia
noun.
A curl or artificial lock of hair, especially on the top of the head or as a sort of crowning feature of a periwig; a periwig having such a top-knot: hence, an artificial patch of hair worn to cover a bald spot or other defect.
the GNU version of the Collaborative International Dictionary of English
noun.
A little tuft; a curl or artificial lock of hair.