Meaning of “fold” - Learner’s Dictionary

fold

verb uk us /fəʊld/
MATERIAL [ T ]

B1 If you fold paper, cloth, etc, you bend it so that one part of it lies flat on top of another part:

Can you help me fold the sheets?
He folded the letter in half.
FURNITURE [ I, T ] (also fold up)

to make something such as a chair or table smaller or flatter by closing it or bending it together:

I folded up the table and put it away.
a folding chair
→ Opposite unfold
BUSINESS [ I ] informal

If a business folds, it fails and is unable to continue:

The magazine folded last year.
fold your arms

to bend your arms across your chest, with one crossing over the other:

He sat with his arms folded.

(Definition of “fold verb” from the Cambridge Learner’s Dictionary © Cambridge University Press)