slit

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. A long, straight, narrow cut or opening.
2. v. To make a slit or slits in.
3. v. To cut lengthwise into strips; split.

Century Dictionary and Cyclopedia

1. To cut asunder; cleave; split; rend; sever.
2. To cut lengthwise or into long pieces or strips: as, the gale has slit the sails into ribbons.
3. To cut or make a long fissure in; slash.
4. n. A long cut or rent; a narrow opening.
5. n. A pocket.
6. n. A cleft or crack in the breast of fat cattle.
7. n. In coal-mining, a short heading connecting two other headings.
8. n. Specifically, in zoöl., anat., and embryology, a visceral cleft; one of the series of paired (right and left) openings in the front and sides of the head and neck of every vertebrate embryo, some of which or all may disappear, or some of which may persist as gill-slits or their equivalents; a branchial, pharyngeal, etc., slit. These slits occur between any two visceral arches of each side; more or fewer of them persist in all branchiate vertebrates. See under cleft, and cut under amnion.
9. n. A Middle English contracted form of slideth, third person singular present indicative of slide.
10. n. In optics, the narrow opening through which a beam of light is admitted into the tube of a spectroscope or other optical instrument.

Wiktionary

1. n. A narrow cut or opening; a slot.
2. n. vulgar, slang The opening of the vagina.
3. n. vulgar, slang A derogatory name for a woman, usually a sexually loose woman; a prostitute.
4. v. To cut a narrow opening.
5. v. To split in two parts.

GNU Webster's 1913

1. 3d. pers. sing. pres. of slide.
2. v. To cut lengthwise; to cut into long pieces or strips
3. v. To cut or make a long fissure in or upon.
4. v. obsolete To cut; to sever; to divide.
5. n. A long cut; a narrow opening.

WordNet 3.0

1. n. a narrow fissure
2. v. cut a slit into
3. n. a long narrow opening
4. v. make a clean cut through
5. n. a depression scratched or carved into a surface
6. n. obscene terms for female genitals