Real Dictionary

-fold
suffix: -fold combines with numbers to form adverbs which say how much an amount has increased by. For example, if an amount increases fourfold, it is four times greater than it was originally.

-fold in American English
having (a specified number of) parts
suffix: a native English suffix meaning “of so many parts,” or denoting multiplication by the number indicated by the stem or word to which the suffix is attached

-fold in British English
having so many parts, being so many times as much or as many, or multiplied by so much or so many

fold in American English 1
to bend or press (something) so that one part is over another; double up on itself
intransitive verb: to be folded or be capable of folding
transitive verb: to bend (cloth, paper, etc.) over upon itself

fold in American English 2
a pen in which to keep sheep
to keep or confine in a pen
noun: an enclosure for sheep or, occasionally, other domestic animals
transitive verb: to confine (sheep or other domestic animals) in a fold

fold in British English 1
noun: a piece or section that has been folded
verb: to bend or be bent double so that one part covers another

fold in British English 2
noun: a small enclosure or pen for sheep or other livestock, where they can be gathered
verb: to gather or confine (sheep or other livestock) in a fold