noun
snake eyes; roll of all ones
Dice term: a roll where both dice show one pip. Often used in games like craps or sugoroku.
サイコロを振ったらピンぞろが出た。
I rolled the dice and got snake eyes.
ゾロ目 refers to any roll where both dice show the same number (doubles), while ピンぞろ specifically means both dice show one.
From ピン (pin, 'one' on dice, from Portuguese pinta) + ぞろ (zoro, 'matching numbers', from 揃う).