A thin, pointed metal pin with a raised spiral thread used to join things together by being turned.

“I need a smaller screw to fix the hinge on this cabinet.”

To fasten or tighten something by turning it round and round.

“Screw the lid back onto the jar so the cookies stay fresh.”

To make a serious mistake or to handle a situation very badly.

“I'm so sorry, I really screwed up and forgot to call you back.”