to push
jam
The word that means 'stretched tightly' is taut.
The word is clutch. Note that this is a verb and a noun at the same time.
A word that would mean the same as gripping tightly could be Grasp or Cluch/Clench.
taut as in the rope was pulled taut
The root word of Expression is "press". The word literally means "to press out", as in pressing out/putting out feelings or words.
grip
The root word that means to draw or press in is "tract," from the Latin word "tractare" which means to handle or manage. This root word is commonly used in words like attract, contract, and subtract.
There is one word that means to press teeth into. This word is bite and is used very often in the English language.
The word you are looking for is "density". Density refers to how tightly packed the matter in a substance is.
The word that starts with "s" and means to press flat is "smash." The yellow vegetable is "squash."
usually means your trunk lid is not latched tightly