one away from a complete hand; iishanten
Mahjong term: a hand that needs only one more tile to reach tenpai (ready hand). Often used in strategy discussions.
from Chinese yī xiàng tīng
See also: テンパイ
This hand is iishanten, so one more tile and it will be tenpai.
From Chinese 一向聽 / 一向听 (yī xiàng tīng), literally 'one direction listen', adopted into Japanese mahjong terminology.