Definition of 辺張 (ペンチャン)

noun
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)(mahjong term)
Related Kanji
environs, boundary, border, vicinity
lengthen, counter for bows & stringed instruments, stretch, spread, put up (tent)