butcher; butcher shop
Refers to a shop that sells meat, or the person who runs it. A straightforward occupational and business term.
I bought fresh chicken at the butcher shop in front of the station.
Compound of 精肉 (seiniku, 'dressed meat') and 商 (shō, 'trade, merchant'). The exact historical derivation is uncertain, but the components transparently indicate a meat-selling business.