Refers to a skilled craftsman who works with wood, including carpentry and joinery. Often implies traditional or artisanal woodworking.
My grandfather was a woodworker and was skilled at making furniture.
The woodworker makes fittings using traditional techniques.
指物師 is a cabinetmaker or joiner specializing in fine woodwork without nails, whereas 木工師 is a more general term for a woodworker.
Compound of 木工 (もっこう, 'woodworking') and 師 (し, 'master' or 'specialist'). The reading もっこう for 木工 is a standard on'yomi combination.