noun
dealer's hand worth 18000 points
Mahjong term: a winning hand as dealer (親) that scores 18000 points, equivalent to a 跳満 (haneman) when the dealer wins.
See also: 跳満
親っ跳を上がれば一気にトップだ。
If I win with a dealer's haneman, I'll jump straight to first place.
この手は親っ跳まで伸びる可能性がある。
This hand has the potential to develop into a dealer's haneman.
跳満 (haneman) is the general term for a hand worth 12000 points (non-dealer) or 18000 points (dealer). 親っ跳 specifically refers to the dealer's 18000-point haneman.
Compound of 親 (oya, 'dealer') + っ (small tsu, euphonic) + 跳 (haneman, from 跳満). The small っ likely aids pronunciation.