four-sided en · ADJ
Meanings
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(not-comparable) Having four sides or faces.
The large four-sided clock in the central tower was made by Dent and exhibited at the Great Exhibition of 1851, where it stood in the middle of the British Avenue. […] each dial is 9 ft. in diameter.
1952 October, C. A. Johns, “One Hundred Years at Kings Cross—1”, in Railway Magazine, page 650: