D defs.my
Entry 2 senses Webster, 1913

Folding

/fōl'-dĭng/ · Fold·ing · IPA /ˈfoʊldɪŋ/
01 n. The act of making a fold or folds; also, a fold; a doubling; a plication.
  1. 1.
    The act of making a fold or folds; also, a fold; a doubling; a plication.
    “The lower foldings of the vest.” Addison.
  2. 2.
    The keepig of sheep in inclosures on arable land, etc.(Agric.)
Phrases & compounds
Folding boat — a portable boat made by stretching canvas, etc., over jointed framework, used in campaigning, and by tourists, etc.
Folding chair — a chair which may be shut up compactly for carriage or stowage; a camp chair.
Folding door — one of two or more doors filling a single and hung upon hinges.