clench

And there would be an awkward silence at the table.I'd clench my jaw a little tighter,hold my coffee pot with a little more vengeance.

No less exposed, but to us, it somehow felt safer.I'd cling to my granny and clench my fistswondering why this was happening to us.

They secure the anteater’s position using chemical signals,clench their powerful muscles and shoot a sticky spray from their heads.After a minute, the anteater stops feeding,

but the hagfish has some tricks up its sleeve.The shark’s teeth clench down but there are no bones to crush—only flexible cartilage.