Definitions:
" an implement for fastening buttons; a buttonhook. also occasionally: a person who fastens the buttons of a garment. frequently with modifying word, as ""shoe-buttoner"", ""shirt-buttoner"", etc. now somewhat rare.

something which fastens together, binds, or closes something tightly.

a person who makes or sells buttons.

a person who sews buttons on garments, especially as an occupation. later also: a machine for sewing buttons on garments. now somewhat rare.

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