bifacial core

(archaeology) The roughly biconical remains of a piece of worked flint(1) from which all possible blades have been struck.

Japanese Meaning

考古学において、加工済みの燧石の一部で、全ての可能な刃が打たれ、ほぼ二円錐状になった残骸を指す。

During the excavation, the archaeologist identified a bifacial core among the debris.

発掘中、考古学者は遺物の中から両面打製核を確認した。

Sense（1）

(archaeology) The roughly biconical remains of a piece of worked flint(1) from which all possible blades have been struck.

bifacial cores

（ plural ）