Robert C. Webb (James E. Homans) links the name Kolob with the Semitic root KLB, meaning dog, and with the Dog-star Sirius.
Robert C. Webb [James E. Homans], “A Critical Examination of the Fac-Similies in the Book of Abraham,” Improvement Era 16, no. 5 (March 1913): 445
The explanation given in connection with this figure is that it indicates "Kolob, signifying the first creation, nearest to the Celestial." The form of this word would seem to suggest a Semitic etymology, akin, perhaps, to the Hebrew word KALAB, a dog; whence, possibly, Sirius, the Dog-star, so called.