Answer: clench

AnswerCrossword Clue
CLENCHForm a fist
clenchto grasp firmly
clenchto close tightly
CLENCHMake into a ball
CLENCHHands and teeth do it
CLENCHHold fast
CLENCHHold tight
CLENCHBear hug
CLENCHGet a grip on
CLENCHMake a fist
CLENCHGrip
CLENCHTighten, as a fist
CLENCHClose tightly
CLENCHGrip tightly.
CLENCHBrace.
CLENCHGrasp firmly
CLENCHHold tightly
CLENCHGrip firmly
CLENCHClose tightly, as one's hand
CLENCHGrip tightly
CLENCHSqueeze tight
CLENCHSomething to do with your teeth