from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Informal An aloof person.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A heartless individual; a person lacking empathy and emotion.
- n. A sexual partner who, during copulation, lacks vigor or emotional reciprocity.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. an aloof unemotional person
First used by Shakespeare in The Winter's Tale. (Wiktionary)