Liddell–Scott–Jones: πελτ-αστής

πελτ-αστής,οῦ,ὁ,

A. one who bears a light shield(πέλτη),targeteer, E. Rh. 311 , Th. 2.29 , Lys. 19.21 , X. Cyr. 2.1.5 .

II. in pl., generally,light troops, Id. HG 4.4.16 , IG 12.97.17 , 99.5 , etc.