Vocabulary What does 骸骨 (がいこつ, gaikotsu) mean? 骸骨 (がいこつ, gaikotsu) means skeleton. Quick factsReadingがいこつRomajigaikotsuPart of speechnoun 骸骨がいこつgaikotsuskeleton1noun skeletonAlso written: がい骨Kanji in this word骸remains, corpse骨bone