"Blend of Shan and trice"
The name Shantrice is commonly a female name from the "American" origin.
Shantrice is a modern American coinage that first appears in United States birth records in 1971. Its form joins the Shan- opening seen in names such as Shanice and Shante with the -trice ending seen in names such as Patrice and Latrice. This describes how the name is built from existing name parts; it is not a meaning in any language.
The pronunciation of Shantrice is shan-TREESS.