wall; barrier

to ring, to sound, to roar, to chime, to honk

(chess) a pawn

(onomatopoeia) pong, a soft electric sound, as in "pong, fasten your seat belts." (a soft-attention in air-flights)

cardboard (corrugated)

a cry; crying

bowl

ball (sphere) / (basebal) ball (pitch that falls outside the strike zone)

ball (formal dance event)

Short for ボール紙 (bōru-gami): non-corrugated cardboard, pasteboard / Short for 段ボール (danbōru): corrugated cardboard