Button

1. n. A globule of metal remaining on an assay cupel or in a crucible, after fusion.
2. n. A knob; a small ball; a small, roundish mass.
3. n. A catch, of various forms and materials, used to fasten together the different parts of dress, by being attached to one part, and passing through a slit, called a buttonhole, in the other; — used also for ornament.
4. n. A bud; a germ of a plant.
5. n. A piece of wood or metal, usually flat and elongated, turning on a nail or screw, to fasten something, as a door.

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.