noun

• (nautical) A senior rating in ships responsible for all the woodwork onboard; in the days of sail, a warrant officer responsible for the hull, masts, spars and boats of a ship, and whose responsibility was to sound the well to see if the ship was making water.
• (zoology) A carpenter bee.
  "The large, stout African bees are carpenters (Xylocopa), making small tunnels in timber, housing few individuals."
• (Canada, British, regional) A woodlouse.
  "Eleven names in Laver’s table (just over 6%) are of the “carpenter” type, a name for woodlice also recorded in Shropshire and Warwickshire.[…] Apparently a Newfoundland word for woodlouse is “carpenter” or “cafner” (another is also “boat-builder”). These names clearly relate to the animals’ affinity to wood as will “carpenter’s flea”, “wood-pig”, “wood-bug”, “grampus wood-bug” and, of course “woodlouse”."

verb

• (transitive, intransitive) To work as a carpenter, cutting and joining timber.