shirt

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. A garment for the upper part of the body, typically having a collar, sleeves, and a front opening.
2. n. An undershirt.
3. n. A nightshirt.
4. idiom. keep (one's) shirt on Slang To remain calm or patient: The plane doesn't land for another hour, so keep your shirt on.
5. idiom. lose (one's) shirt Slang To lose everything one has or owns.
6. idiom. the shirt off (one's) back Slang The maximum one is able to give or lose: The only thing those swindlers didn't take was the shirt off my back.

Century Dictionary and Cyclopedia

1. n. A garment, formerly the chief under-garment of both sexes. Now the name is given to a garment worn only by men and a similar garment worn by infants. It has many forms. In western Europe and the United States, the shirt ordinarily worn by men is of cotton, with linen bosom, wristbands, and collar prepared for stiffening with starch, the collar and wristbands being usually separate and adjustable. Flannel and knitted worsted shirts or under-shirts are also worn.
2. n. The amnion, or some part of it.
3. n. In a blast-furnace, an interior lining.
4. To clothe with a shirt; hence, by extension, to clothe; cover.

Wiktionary

1. n. An article of clothing that is worn on the upper part of the body, and often has sleeves, either long or short, that cover the arms.
2. n. a member of the shirt-wearing team.
3. v. To cover or clothe with a shirt, or as if with a shirt.

GNU Webster's 1913

1. n. A loose under-garment for the upper part of the body, made of cotton, linen, or other material; -- formerly used of the under-garment of either sex, now commonly restricted to that worn by men and boys.
2. v. To cover or clothe with a shirt, or as with a shirt.

WordNet 3.0

1. n. a garment worn on the upper half of the body
2. v. put a shirt on