hammock

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. A hanging, easily swung length of canvas or heavy netting suspended between two trees or other supports and used as a seat or bed.
2. n. Variant of hummock.

Century Dictionary and Cyclopedia

1. n. A kind of hanging bed. Hammocks used at sea, especially on men-of-war, are made of canvas, and have a number of cords at each end, called clues, which are brought together and secured to an iron ring, which is hung on a hook attached to the deck-beams. Those used in the tropical parts of America and in summer in the north are usually formed of a network of Panama grass or small cords.
2. n. In entomology, the hammock-like sack or case carried by the larvæ of certain tineid moths, as Œcophora harrisiella, hence called case-bearers.
3. n. See hummock.

Wiktionary

1. n. A swinging couch or bed, usually made of netting or canvas about six feet wide, suspended by clews or cords at the ends.
2. n. A piece of land thickly wooded, and usually covered with bushes and vines.

GNU Webster's 1913

1. n. A swinging couch or bed, usually made of netting or canvas about six feet long and three feet wide, suspended by clews or cords at the ends.
2. n. A piece of land thickly wooded, and usually covered with bushes and vines. Used also adjectively.

WordNet 3.0

1. n. a small natural hill
2. n. a hanging bed of canvas or rope netting (usually suspended between two trees); swings easily