Easton's Bible Dictionary
In which Jehovah appeared to Moses in the wilderness (Exodus 3:2; Acts 7:30). It is difficult to say what particular kind of plant or bush is here meant. Probably it was the mimosa or acacia. The words "in the bush" in Mark 12:26; Luke 20:37, mean "in the passage or paragraph on the bush;" i.e., in Exodus 3.
Noah Webster's New International Dictionary of the English Language
1. (n.) A thicket, or place abounding in trees or shrubs; a wild forest.
2. (n.) A shrub; esp., a shrub with branches rising from or near the root; a thick shrub or a cluster of shrubs.
3. (n.) A shrub cut off, or a shrublike branch of a tree; as, bushes to support pea vines.
4. (n.) A shrub or branch, properly, a branch of ivy (as sacred to Bacchus), hung out at vintners' doors, or as a tavern sign; hence, a tavern sign, and symbolically, the tavern itself.
5. (n.) The tail, or brush, of a fox.
6. (v. i.) To branch thickly in the manner of a bush.
7. (v. t.) To set bushes for; to support with bushes; as, to bush peas.
8. (v. t.) To use a bush harrow on (land), for covering seeds sown; to harrow with a bush; as, to bush a piece of land; to bush seeds into the ground.
9. (n.) A lining for a hole to make it smaller; a thimble or ring of metal or wood inserted in a plate or other part of machinery to receive the wear of a pivot or arbor.
10. (n.) A piece of copper, screwed into a gun, through which the vent hole is bored.
11. (v. t.) To furnish with a bush, or lining; as, to bush a pivot hole.