belemnite

1. n. A conical calcareous fossil, tapering to a point at the lower extremity, with a conical cavity at the other end, where it is ordinarily broken; but when perfect it contains a small chambered cone, called the phragmocone, prolonged, on one side, into a delicate concave blade; the thunderstone. It is the internal shell of a cephalopod related to the sepia, and belonging to an extinct family. The belemnites are found in rocks of the Jurassic and Cretaceous ages. Source: opted

2. n. 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 Source: wordnet

3. A conical calcareous fossil, tapering to a point at the lower extremity, with a conical cavity at the other end, where it is ordinarily broken; but when perfect it contains a small chambered cone, called the phragmocone, prolonged, on one side, into a delicate concave blade; the thunderstone. It is the internal shell of a cephalopod related to the sepia, and belonging to an extinct family. The belemnites are found in rocks of the Jurassic and Cretaceous ages. -- Bel*em*nit"ic, a. Source: webster

4. A conical calcareous fossil, tapering to a point at the lowerextremity, with a conical cavity at the other end, where it isordinarily broken; but when perfect it contains a small chamberedcone, called the phragmocone, prolonged, on one side, into a delicateconcave blade; the thunderstone. It is the internal shell of acephalopod related to the sepia, and belonging to an extinct family.The belemnites are found in rocks of the Jurassic and Cretaceousages.-- Bel*em*nit"ic, a. Source: adambom

5. n. 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 Source: ecdict

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