castellated beam
noun
a rolled metal beam the web of which is first divided by a lengthwise zigzag cut, then welded together so as to join the peaks of both halves, thus increasing its depth and strength.
Origin of castellated beam
First recorded in 1670–80
Words nearby castellated beam
castellan,
castellanos,
castellanus,
castellany,
castellated,
castellated beam,
castellated nut,
castellatus,
castellum,
castellón de la plana,
castelnuovo-tedesco