Joiner n. : One who, or that which, joins.

Joiner n. : One whose occupation is to construct articles by joining pieces of wood; a mechanic who does the woodwork (as doors, stairs, etc.) necessary for the finishing of buildings.

Joiner n. : A wood-working machine, for sawing, plaining, mortising, tenoning, grooving, etc.

Example:
Does a Joiner need to cut out checks on roof trusses to make them fit?

Taxonomy
joiner, joinery, free encyclopedia, carpenter, woodworking joints, search, cuts, wood, nails, workshop environment, machinery, furniture, USA, trade union, woodworking tool, United Brotherhood of Carpenters and Joiners of America, company, exterior doors.

Defination from the web:
joiner differs from a carpenter in that he or she cuts and fits joints in wood that do not use nails, usually in a workshop environment since ... The "joinery" and "joiner" usage is obsolete in the USA, although the main carpenters' trade union still calls itself the United Brotherhood of ...