tail bone

Từ điển Oxford Learners Wordfinder Dictionary

noun

the end of the vertebral column in humans and tailless apes
• Syn:
coccyx
• Derivationally related forms:
coccygeal (for: coccyx)
• Hypernyms:
bone, os
• Part Holonyms:
pelvis, pelvic girdle, pelvic arch, hip, spinal column,
vertebral column, spine, backbone, back, rachis
• Part Meronyms:
coccygeal vertebra, caudal vertebra