noun
pushing an opponent out of the ring from behind
Sumo term for a winning technique where a wrestler pushes the opponent out of the ring from behind, often after the opponent has turned around.
横綱は送り出しで勝ち越しを決めた。
The yokozuna secured a winning record with an okuridashi.
押し出し is a frontal push-out, while 送り出し is a push-out from behind.
Compound of 送り (okuri, 'sending') + 出し (dashi, 'putting out'), literally 'sending out'. The sumo sense derives from the action of propelling the opponent out of the ring from behind.