📒 when you clench your hands, teeth, etc., or when they clench, you press them together tightly, usually showing that you are angry, determined or upset
clench (something) He clenched his fists in anger.
Through clenched teeth she told him to leave.
His fists clenched slowly until his knuckles were white.
📒 to hold something tightly
be clenched between/in something Her pen was clenched between her teeth.
She had a gun clenched tightly in her hand.
clench something He clenched the steering wheel tightly.