英語候補wait for one of two types of tiles to complete a chow which will finish one's handdouble-sided wait (for one's last tile)
辺張ペンチャンone-sided wait for the end tile of a three-in-a-row which will finish one's hand (i.e. for a 3 while holding 1-2, or for a 7 while holding 8-9)