Answer: frenulums

AnswerCrossword Clue
frenulums(in some moths and butterflies) A bristle or row of bristles on the edge of the hind wing that keeps it in contact with the forewing
frenulumsA small fold or ridge of tissue that supports or checks the motion of the part to which it is attached, in particular a fold of skin beneath the tongue, or between the lip and the gum
frenulumsFRENULUM, a connecting fold of membrane (one pl FRENULA), also FRENUM, FRAENUM