1. dated The portion of a pipe that is reserved for screwing or slotting into another section of pipe. Be sure to list the total footage of the proposed pipeline, less the screwage.

2. An act or instance of being cheated, swindled, unfairly deprived, or put at an unfair disadvantage. The real fun of the board game lies in the screwage you can inflict on other players. I have to deduct nearly 40% of my earnings for taxes. Talk about screwage!