Strong's G939 · Greek

βάσις

basis · bas'-ece

from baino (to walk); a pace ("base"), i.e. (by implication) the foot

Scholarly Lexicons

Abbott-Smith Manual Greek Lexicon

 1 βάσις , -εως, ἡ ( βαίνω ), [in LXX chiefly for אֶדֶן ;] a step (Æsch., al.). Hence, a foot (Plat.; Wi 13:18 ): Ac 3:7 .† 

G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain