- a spherical aggregate of small diamond crystals used for drilling and for various industrial purposes.
Origin of ballas
Examples from the Web for ballas
Historical Examples of ballas
The sides of one Neolithic tomb at Ballas were lined with bars of this kind.
These cists were found at Ballas both in “stairway” tombs and in open Neolithic graves.
This cannot be distinguished from certain fragments obtained in the Neolithic cemetery at Ballas.
A rough example of No. 44 was found at Ballas, used anciently as a lamp with floating wick.
The crucial case at Ballas was the secondary burial of a Libyan found in one of a group of stairway mastabas.