A starburst is graphic design or typographical element that resembles diverging rays of light, or consists of a star-like image with rays emanating from it. In Unicode, the starburst character ("sixteen pointed asterisk") is U+273A.
The term can also refer to the Combining Cyrillic Millions character ( ҉ ) whose Unicode is U+0489.
It is notably used as the current logo of Walmart.
References
Starburst (symbol) Wikipedia(Text) CC BY-SA