Real Dictionary

borrow
verb: If you borrow a book from a library, you take it away for a fixed period of time.
verb: If you borrow money from someone or from a bank, they give it to you and you agree to pay it back at some time in the future.
verb: If you borrow something such as a word or an idea from another language or from another person's work, you use it in your own language or work.
verb: If you borrow something that belongs to someone else, you take it or use it for a period of time, usually with their permission.

borrow in American English
to take or receive (something) with the understanding that one will return it or an equivalent
intransitive verb: to borrow something
transitive verb: to take or obtain with the promise to return the same or an equivalent

borrow in British English
noun: a deviation of a ball from a straight path because of the slope of the ground
noun: George (Henry). 1803–81, English traveller and writer. His best-known works are the semiautobiographical novels of Roma life and language, Lavengro (1851) and its sequel The Romany Rye (1857)
verb: to obtain or receive (something, such as money) on loan for temporary use, intending to give it, or something equivalent or identical, back to the lender