1. (n.) The male of any species of cattle (Bovidae); hence, the male of any large quadruped, as the elephant; also, the male of the whale.

2. (n.) One who, or that which, resembles a bull in character or action.

3. (n.) Taurus, the second of the twelve signs of the zodiac.

4. (n.) A constellation of the zodiac between Aries and Gemini. It contains the Pleiades.

5. (n.) One who operates in expectation of a rise in the price of stocks, or in order to effect such a rise. See 4th Bear, n., 5.

6. (a.) of or pertaining to a bull; resembling a bull; male; large; fierce.

7. (v. i.) To be in heat; to manifest sexual desire as cows do.

8. (v. t.) To endeavor to raise the market price of; as, to bull railroad bonds; to bull stocks; to bull Lake Shore; to endeavor to raise prices in; as, to bull the market. See 1st Bull, n., 4.

9. (n.) A seal. See Bulla.

10. (n.) A letter, edict, or respect, of the pope, written in Gothic characters on rough parchment, sealed with a bulla, and dated a die Incarnationis, i. e., from the day of the Incarnation. See Apostolical brief, under Brief.

11. (n.) A grotesque blunder in language; an apparent congruity, but real incongruity, of ideas, contained in a form of expression; so called, perhaps, from the apparent incongruity between the dictatorial nature of the pope's bulls and his professions of humility.