weatherboard in American English
clapboard
to cover with weatherboards
noun: an early type of board used as a siding for a building
transitive verb: to cover or furnish with weatherboards
weatherboard in British English
noun: a timber board, with a groove (rabbet) along the front of its top edge and along the back of its lower edge, that is fixed horizontally with others to form an exterior cladding on a wall or roof