Girder

·noun One who girds; a satirist.

II. Girder ·noun One who, or that which, girds.

III. Girder ·noun A main beam; a stright, horizontal beam to span an opening or carry weight, such as ends of floor beams, ·etc.; hence, a framed or built-up member discharging the same office, technically called a compound girder. ·see Illusts. of Frame, and Doubleframed floor, under Double.