also: こんや
dyer; dye house
Refers to a person or business that dyes cloth. Often appears in the proverb 紺屋の白袴 (the dyer's white hakama), meaning one is so busy with others' work that one neglects one's own affairs.
My grandfather ran a dyeing business.
It's just like the saying 'the dyer's white hakama'—too busy with others' work to take care of one's own.