expression, godan verb (-su)
fly a pigeon
Literal expression meaning to release or let a pigeon fly. Often used in contexts of sending messages via carrier pigeon or symbolic release.
式典で平和の象徴として鳩を飛ばす。
They release pigeons as a symbol of peace at the ceremony.
Compound of 鳩 (hato, 'pigeon') + を (wo, object marker) + 飛ばす (tobasu, 'to let fly'). The expression is transparent and literal.