The term AT BRISTLE is composed of four words: AWN (3 letters), SETA (4 letters), ARISTA (6 letters), and TEEM (4 letters). AWN is a type of feather found on the wings and tails of certain birds, such as geese and ducks. SETA is a type of bristle-like hair found on the bodies of some animals, such as cats and dogs. ARISTA is a stiff bristle-like structure found on the heads of some insects, such as grasshoppers and crickets. Finally, TEEM is a verb meaning to be filled or crowded with people or things. Together, these words describe a situation where something is densely populated with feathers, bristles, and other structures.