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.
girder in Dutch is balk, ribbe, onderlegger
girder in Finnish is hirsi
girder in French is poutre
girder in German is Tragbalken
girder in Hungarian is mestergerenda