lengthwise
lengthways BrE

The mouth of this reservoir has been divided lengthwise into three parts by using two stone pillars.

The term originally referred to portions of a log which had been split lengthwise into four or six sections.

In addition, whichever pair was raised could move lengthwise along a horizontal guide and descend at varying displacements with respect to the lower.

Next Deegie picked up a long deer rib, which had been split lengthwise so that the porous inner bone was exposed at the convex end.