The Collaborative International Dictionary of English v.0.48:
Knickerbocker \Knick"er*bock`er\, n.
A linsey-woolsey fabric having a rough knotted surface on the
right side; used for women's dresses.
[Webster 1913 Suppl.]
The Collaborative International Dictionary of English v.0.48:
Knickerbocker \Knick"er*bock`er\, [capitalized] prop. n. [From
Diedrich KNickerbocker, the fictional author of The History
of New York, in fact written by Washington Irving.]
A descendent of the early Dutch colonists of the New York
City area; -- used mostly as a nickname for an inhabitant of
New York state or especially New York City.
[PJC]