sidelessadj.
/ˈsʌɪdlᵻs/, U.S. /ˈsaɪdlᵻs/ Without sides; open at the sides.
ΘΚΠ
the world > space > relative position > condition of being open or not closed > [adjective] > open or not enclosed > at the sides
sideless1604
1604 T. Bilson Suruey Christs Sufferings 317 A sidelesse and bottomlesse pit of absurd dreames and doctrines.
1817 S. T. Coleridge Biogr. Lit. I. xii. 267 No less a contradiction than an infinite circle or a sideless triangle.
1834 J. R. Planché Hist. Brit. Costume xi. 163 The sideless garment faced with fur, and terminating in long full skirts.
1877 Athenæum 3 Nov. 571/3 The ladies..wear the sideless cotehardies which were so common in their day.
1941 Thomasville (Georgia) Times-Enterprise 26 Aug. 1/2 Roofless and sideless houses stood as grim evidence of the storm's fury.
1984 J. Seymour Forgotten Arts (1985) 150 (caption) The traditional brickmaker's hack barrow is sideless, for easy loading.
2002 Daily Mail (Nexis) 2 Jan. 11 Joely Richardson turned up for a premiere in a backless, sideless mini dress.
This entry has been updated (OED Third Edition, March 2016; most recently modified version published online March 2022).
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adj.1604