Is “Caste” a Scrabble word?
Yes
CASTE
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Caste
/kɑːst/
noun
1.Any of the hereditary social classes and subclasses of South Asian societies.
2.A separate and fixed order or class of persons in society who chiefly associate with each other.
3.A class of polymorphous eusocial insects of a particular size and function within a colony.