What does fold mean?
Fold is one of those unassuming words that turns out to be everywhere once you notice it. At its core, it means to bend something over on itself so that one part rests upon another — a sheet of paper, a shirt, a letter, or a map. The same word serves as a noun for the crease or layer that results, for a fold in geology where rock strata buckle under pressure, and, in an older pastoral sense, for the enclosure where sheep are kept — hence 'the fold', still used figuratively for a community into which newcomers are welcomed. Fold also extends beyond physical bending: a failing business is said to 'fold', and in card games like poker a player who 'folds' withdraws from the hand. Directly descended from Old English fealdan, with close relatives in Dutch and German, fold is over a thousand years old and remains among the most versatile everyday verbs in the language.
To bend a flexible material, such as paper, cloth, or dough, over on itself so that one part lies upon another.
"Fold the omelette in half and slide it onto a warm plate."
In cookery, 'to fold in' means to blend a light mixture into a heavier one gently, preserving airiness.
A crease, layer, or bend made by folding; a curved structure in deformed rock strata; or an enclosure for sheep.
"The tailor pressed each fold of the pleated skirt before hanging it."
The geological sense applies chiefly to structural geology; the pastoral sense survives mainly in figurative uses such as 'welcome back to the fold'.
(Of a business or venture) to fail and cease trading; in card games, to abandon a hand rather than match a bet.
"When the funding fell through, the startup simply folded."
Strictly these are verbal uses of fold rather than separate noun senses, but they are commonly encountered and widely understood.
Regular plural; used for multiple creases or layers, and occasionally for several sheep enclosures.
"The origami crane required dozens of precise folds to complete."
The humble 'fold' has been part of English since before English was English — it descends directly from the Old English verb fealdan, making it well over a thousand years old.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of fold
Fold derives from the Old English strong verb fealdan, meaning to bend or wrap over, which itself comes from the Germanic root *falthan-. It is thus a native Germanic word rather than a Latin or French borrowing, with close cognates in other West Germanic languages, including Dutch vouwen and German falten. A related borrowing appears in 'faldstool', a folding desk or prayer desk adopted via ecclesiastical use. The word has been continuous in English since the earliest records of the language.
Related word forms
How fold is actually used
Fully standard and neutral in register across British and American usage. The business sense ('the company folded') is common in informal and journalistic contexts, while 'the fold' for a community carries a faintly pastoral or religious connotation. In cooking, 'fold in' describes gently combining ingredients without stirring briskly.
Easily confused with fold
A pleat is a specific decorative fold of fabric stitched or pressed in place, whereas fold refers to bending any material over on itself in general.