Abbott-Smith Manual Greek Lexicon
ὑποπόδιον (G5286)
7 † ὑποπόδιον , -ου, τό ( ὑπό , πούς ), [in LXX: Ps 98 (99):5 109 (110):1 , Is 66:1 , La 2:1 ( הֲדֹם ) * ;] a footstool (= cl. θρᾶνος ): Ja 2:3 ; metaph., Mt 5:35 , Mk 12:36 ( ὑποκάτω , WH, R, mg.), Lk 20:43 , Ac 2:35 7:49 , He 1:13 10:13 (all, except Mt, l.c. , from LXX, Ps 109 (110):1 , Is 66:1 ) (for exx., v. Deiss., BS , 223).†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain