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Webster 1913 Edition

Noun.

(Arch.)

(a)

The covering or siding of a building, formed of boards lapping over one another, to exclude rain, snow, etc.

(b)

Boards adapted or intended for such use.

weatherboarding ‎(countable and uncountable, plural weatherboardings)

(architecture) A type of wooden siding in which a house is sided with long, thin, overlapping boards.