sideless en · ADJ
Etymology
From side + -less.
Meanings
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(not-comparable) Lacking a side; open at the sides.
However, some things don't change. The elevated terminus has a platform canopy that's neither use nor ornament. Its high sideless roof offers little protection from rain or winds off the Thames!
2022 November 16, Paul Bigland, “From rural branches to high-speed arteries”, in RAIL, number 970, page 56:It's a sideless wagon, but it should hitch up to something the horses can pull […]
2013, Abrey Davis, Dead States: Remnant: