noun, British English - a small, flat object used to hold hair in place, usually decorative and worn by sliding it into the hair
noun - a kitchen equipment used for grinding whole peppercorns into ground pepper, often adjustable to control the coarseness of the grind
adverb - in a way that allows two or more things to be used instead of each other without any significant difference
noun - a personal computer designed to be used on a desk or table, usually having a separate monitor, keyboard, mouse, etc.