one who bears a light shield πέλτη); instead of the heavy ὅπλον, a targeteer , Lat. cetratus, (Euripides), etc. The peltasts held a place between the ὁπλῖται and ψιλοί. (ML)
STRONG'S WORD STUDY
G8688 — πελταστής
peltastēs · armed with a small shield · Greek