英和和英

to attach a stamp

to affix one's seal to a paper―seal a bond

to make a thumb-print （on a document）―seal a document with a thumb-print

to press a button

push the button down

Click the button

the stroke of a key

to press the button

press down

to finger a button―fumble a button

to tap the keys of an instrument

click the castanets

press a button

to yield to pressure―give under pressure

to make a person hit a key

Don't jostle me.

to brand anything

squeeze the trigger

a push button on the mouse

push the shutter

lubricate the key

unmuzzle the press

muzzle the press

pull the trigger

pull the trigger

pop the clutch

lift the pressure

knock up copy

stop the presses

halt the presses