from The American Heritage® Dictionary of the English Language, 4th Edition
- adv. Onto or on a shore, reef, or the bottom of a body of water: a ship that ran aground; a ship aground offshore.
- adv. On the ground: combat aircraft aloft and aground.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Resting on the bottom. (refers only to floating craft).
- adj. Stuck fast, stopped, at a loss, ruined; like a boat or vessel aground.
- adv. Resting on the bottom. (refers only to floating craft).
from the GNU version of the Collaborative International Dictionary of English
- adv. On the ground; stranded; -- a nautical term applied to a ship when its bottom lodges on the ground.
from The Century Dictionary and Cyclopedia
- On the ground; stranded: a nautical term signifying that the bottom of a ship rests on the ground for want of sufficient depth of water: opposed to afloat.
- Figuratively, brought to a stop for want of resources, matter, and the like: as, the speaker is aground.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adv. with the bottom lodged on the ground
- adj. stuck in a place where a ship can no longer float
From Middle English agrounde, on grounde ("on ground"), equivalent to a- + ground. (Wiktionary)