ピスコMeanings1nounpiston corerabbreviationAbbreviation of 'piston corer', a device used in oceanography and geology to collect sediment samples from the seafloor.海かい底ていの堆たい積せき物ぶつを採さい取しゅするためにピスコを使し用ようした。We used a piston corer to collect sediment samples from the seafloor.