Liddell–Scott–Jones: ὑπασπ-ιστής

ὑπασπ-ιστής,οῦ,ὁ,

A. shield-bearer, armour-bearer, esquire,

Hdt. 5.111 , E. Rh. 2 (anap.), Ph. 1213 , X. An. 4.2.20 , etc.

2. pl., a brigade of guards in the Macedonian army, D.S. 19.40 , Arr. An. 2.4.3 , 2.20.6 .