screwscrewscrews1nouna small metal thing with a sharp end, that you use for fixing things together. You push it into something by turning it with a special tool (called a screwdriver).screwscrewscrewsscrewedscrewing2verb (screws, screwing, screwed)1to fix something to another thing using a screw: The cupboard is screwed to the wall.2to turn something to fix it to another thing: Screw the lid on the jar.screw something upto make paper or material into a ball with your hand: He screwed up the letter and threw it in the bin.