The interconnection between flanges in structural members, increasing the effective lever arm and so the load capacity of the member.
The thinner vertical section of a railway rail between the top (head) and bottom (foot) of the rail.
A fold of tissue connecting the toes of certain birds, or of other animals.
The series of barbs implanted on each side of the shaft of a feather, whether stiff and united together by barbules, as in ordinary feathers, or soft and separate, as in downy feathers.
A continuous strip of material carried by rollers during processing.
A long sheet of paper which is fed from a roll into a printing press, as opposed to individual sheets of paper.