from The American Heritage® Dictionary of the English Language, 4th Edition
- transitive v. To supply (dry land) with water by means of ditches, pipes, or streams; water artificially.
- transitive v. To wash out (a body cavity or wound) with water or a medicated fluid.
- transitive v. To make fertile or vital as if by watering.
- intransitive v. To supply land with water artificially.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- v. To supply farmland with water, by building ditches, pipes, etc.
- v. To clean a wound with a fluid
from the GNU version of the Collaborative International Dictionary of English
- transitive v. To water; to wet; to moisten with running or dropping water; to bedew.
- transitive v. To water, as land, by causing a stream to flow upon, over, or through it, as in artificial channels.
- transitive v. To rinse (a wound, infected area, etc.) with a flow or spray of a liquid.
from The Century Dictionary and Cyclopedia
- To pass a liquid over or through; moisten by a flow of water or other liquid.
- Specifically—2. To water, as land, by causing a stream or streams to be distributed over it. See irrigation.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- v. supply with a constant flow or sprinkling of some liquid, for the purpose of cooling, cleansing, or disinfecting
- v. supply with water, as with channels or ditches or streams
Latin irrigāre, irrigāt- : in-, in; see in-2 + rigāre, to water.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin irrigare. (Wiktionary)