Answer: holdfast

AnswerCrossword Clue
HOLDFASTHang on tightly
HOLDFASTCatch or clamp.
HOLDFASTHang on tight
holdfasta fastening device
holdfastA stalked organ by which an alga or other simple aquatic plant or animal is attached to a substrate
holdfastA staple or clamp securing an object to a wall or other surface
holdfastA firm grip