An example of a raveling is a thread that has pulled away from the cut edge of a pair of woven shorts.
To avoid raveling, try using pinking shears on your fabric instead of scissors.
Typically, a group consists of half couples or friends and half individuals raveling alone.
Finishing will prevent raveling which can, in time, cause the seam to break apart.
To keep the fabric from raveling, either sew the edges on a sewing machine or use one of the products sold to prevent fraying.