A "globular star" refers to a type of star cluster that appears spherical or ball-shaped. These star clusters contain a large number of stars that are densely packed together. Full definition
(The left hand of the two dark objects is a much nearer globular star cluster.) (sciencedaily.com)
Gas that has been discovered streaming at high speed from an old star in our region of the Galaxy could solve the mystery of why no interstellar matter has been found within the tightly packed groups of stars, known as globular star clusters, which lie much further away. (newscientist.com)
The motion of the stars may also offer a glimpse into how the star cluster was formed — whether it was built up over time by globular star clusters that happen to fall into the galaxy's center, or from gas spiraling in from the Milky Way's disk to form stars at the core. (sciencedaily.com)