belemnite

Từ điển Oxford Learners Wordfinder Dictionary

noun

a conical calcareous fossil tapering to a point at one end and with a conical cavity at the other end containing (when unbroken) a small chambered phragmocone from the shell of any of numerous extinct cephalopods of the family Belemnitidae
• Derivationally related forms:
belemnitic
• Hypernyms:
fossil
• Member Holonyms:
Belemnitidae, family Belemnitidae