from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A high, tubular, often rolled-down collar that fits closely about the neck.
- n. A garment, such as a sweater, that has this type of collar.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A high, close-fitting collar, turned back on itself and covering all or most of the neck, on a sweater or similar garment.
- n. A turtleneck sweater.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a sweater or jersey with a high close-fitting collar
From turtle + neck. (Wiktionary)