glue

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. A strong liquid adhesive obtained by boiling collagenous animal parts such as bones, hides, and hooves into hard gelatin and then adding water.
2. n. Any of various similar adhesives, such as paste, mucilage, or epoxy.
3. n. An adhesive force or factor: Idealism was the glue that held our group together.
4. v. To stick or fasten with or as if with glue.
5. v. To fasten on something attentively: Our eyes were glued to the stage.

Century Dictionary and Cyclopedia

1. n. A viscous adhesive substance used as a cement for uniting pieces of wood or other material, or in combination with other substances to give body or to make rollers, molds, packing, etc. The glue in ordinary use is common or impure gelatin, obtained by boiling animal substances, as skin, hoofs, etc., in water. It is also employed by textile colorists, for the reason that its solutions are precipitated by tannic acid, and the precipitate so produced attracts many of the coal-tar colors from their solutions. In this respect it serves as a fixing-agent for the tannic acid; but as a nitrogenous albuminoid substance, It may at the same time act as a mordant. A kind of glue is made in Japan from Glœopeltis intricata, which is used to stiffen thread, to cleanse and soften the hair, for painting on porcelain, and for attaching paper hangings to plastered walls.
2. To join with glue or other viscous substance; stick or hold fast.
3. To unite or hold together as if by glue; fix or fasten firmly.
4. To stick fast; adhere; unite; cling.
5. n. A very low grade of hide, practically worthless for tanning, but used in the manufacture of glue: commonly called glue-stock.

Wiktionary

1. n. A hard gelatin made by boiling bones and hides, used in solution as an adhesive; or any sticky adhesive substance.
2. n. obsolete Birdlime.
3. v. transitive To join or attach something using glue.
4. v. transitive To cause something to adhere closely to; to follow attentively.

GNU Webster's 1913

1. n. A hard brittle brownish gelatin, obtained by boiling to a jelly the skins, hoofs, etc., of animals. When gently heated with water, it becomes viscid and tenaceous, and is used as a cement for uniting substances. The name is also given to other adhesive or viscous substances.
2. v. To join with glue or a viscous substance; to cause to stick or hold fast, as if with glue; to fix or fasten.

WordNet 3.0

1. v. join or attach with or as if with glue
2. v. be fixed as if by glue
3. n. cement consisting of a sticky substance that is used as an adhesive