What is the meaning of Pion?

Any of three semistable mesons, having positive, negative or neutral charge, composed of up and down quarks/antiquarks.

pawn; least valuable piece in chess

a pawn; a person who has no control over their lot, usually manipulated by others to some end

piece, pawn (generic player piece in boardgames resembling the pawn in chess)

pawn (someone without control; one who is (easily) manipulated)

pion (subatomic particle)

accusative singular of pio

supervisor (in a school)

alternative form of peon

duct; riser; any installations or spaces running vertically in a building

flats in an apartment block sharing those installations

peony; a flower

pion; any of the semistable π-mesons

Source: wiktionary.org

See also