Ring-necked a. Zool. Having a well defined ring of color around the neck.
 Ring-necked duck Zool., an American scaup duck (Aythya collaris). The head, neck, and breast of the adult male are black, and a narrow, but conspicuous, red ring encircles the neck. This ring is absent in the female. Called also ring-neck, ring-necked blackhead, ringbill, tufted duck, and black jack.

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 Tuft·ed a.
 1. Adorned with a tuft; as, the tufted duck.
 2. Growing in tufts or clusters; tufty.
    The tufted crowtoe, and pale jessamine.   --Milton.
    Tufted trees and springing corn.   --Pope.
 Tufted duck Zool., the ring-necked duck. [Local, U. S.]

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