penchan wait; edge wait
A mahjong term for a one-sided wait on the end tile of a run, e.g. waiting for a 3 when holding 1-2, or a 7 when holding 8-9. This is a specific type of ryanmen-machi (two-sided wait) that only completes one side of a sequence.
I declared riichi with a penchan wait, but I couldn't draw the winning tile until the end.
This hand has a penchan wait, so there's only one type of tile I'm waiting for.
Standard kanji spelling for this mahjong term.
Mixed kanji-katakana spelling commonly seen in mahjong contexts.
辺張 is a Chinese mahjong term for an edge wait, borrowed with the reading ペンチャン; Japanese 待ち “wait” was then added.