2. (Science: mathematics) to take (one or more) from the next higher denomination in order to add it to the next lower; a term of subtraction when the figure of the subtrahend is larger than the corresponding one of the minuend.
3. To copy or imitate; to adopt; as, to borrow the style, manner, or opinions of another. Rites borrowed from the ancients. (Macaulay) It is not hard for any man, who hath a bible in his hands, to borrow good words and holy sayings in abundance; but to make them his own is a work of grace only from above. (Milton)