from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Informal An elderly person.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Someone who is old-aged
from the GNU version of the Collaborative International Dictionary of English
- n. An old person.
from The Century Dictionary and Cyclopedia
- n. An old or oldish person; a man past middle life.
- n. In the British navy, a midshipman of four years' standing, or a master's mate.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. an elderly person
Derived from old + -ster. (Wiktionary)