Agent noun of needle; one who needles; an annoyer. / One who makes or uses needles. / A dealer in needles. / (chiefly science fiction) A gun that fires needles or darts.

A city, the county seat of Manitowoc County, Wisconsin, on the shore of Lake Michigan. / A river in Wisconsin, the Manitowoc River, which flows into Lake Michigan at Manitowoc.

(possibly nonstandard) Navigable.

To devalue.