What does the name Pocahontas mean?

According to Encyclopaedia Britannica:

Pocahontas was the nickname in Virginia Algonquian language for Mataoaka (c. 1595-1617), daughter of Powhatan, and it meant "little wanton" (according to William Stratchey), i.e. little playful (wild) girl.

Later she was baptized and Christened Rebecca, and married to John Rolfe (not Smith).

Pastor Josue Yrion (Brazil c. 2007) claims an other meaning (no source given):

Poco means "spirit"

hontas means "abyss"