n. a soft spherical object made from fluffy fibers; for applying powder to the skin

n. adornment consisting of a bunch of cords fastened at one end

n. border consisting of anything placed on the edge to finish something (such as a fringe on clothing or on a rug)

n. the outside boundary or surface of something

n. an undeveloped field of study; a topic inviting research and development; "he worked at the frontier of brain science"