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Webster 1913 Edition

Noun.

The act of laying planks; also, planks, collectively; a series of planks in place, as the wooden covering of the frame of a vessel.

The act of splicing slivers. See

Verb.

, 4.

planking ‎(countable and uncountable, plural plankings)

A series of planks; a group of planks.
The practice of lying face down with arms to the sides, in unusual public spaces, and taking photographs to record the act.

series of planks

practice of lying face down with arms to the sides

planking