n A wig block: a simplified head model upon which wigs are worn.
n A set of sheets (of paper) joined together at one end.
n (nautical) Used with ropes or cables to facilitate lifting loads.
n (computing) A logical data storage unit containing one or more physical sector | sectors (see cluster).
n (computing) A region of code in a program that acts as a single unit, such as a function or loop.
n (context|rigging) A case with one or more sheaves/pulleys, used with ropes to increase or redirect force, for example, as part of the rigging of a sailingship.
n (chemistry) A portion of a macromolecule, comprising many units, that has at least one feature not present in adjacent portions.