- An area having a wet, spongy, acidic substrate composed chiefly of sphagnum moss and peat in which characteristic shrubs and herbs and sometimes trees usually grow. (noun)
- Any of certain other wetland areas, such as a fen, having a peat substrate. Also called peat bog. (noun)
- An area of soft, naturally waterlogged ground. (noun)
- To cause to sink in or as if in a bog: We worried that the heavy rain across the prairie would soon bog our car. Don't bog me down in this mass of detail. (verb-transitive)
- To be hindered and slowed. (verb-intransitive)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.