Liddell–Scott–Jones: ὑπότριψις

ὑπότριψις,εως,ἡ,

A. a rubbing under,e.g. of a horse's hoof, Hippiatr. 54 .

II. dat. pl.ὑποτρίψεσιν, under parts,lower framework of tables, trestles, etc., Ph. Bel. 74.14 codd. (ὑποτρίποσιν'supports for tripods', Diels).