Is “Sienna” a Scrabble word?
Yes
SIENNA
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 Sienna
/siˈɛnə/
noun
1.A form of clay containing iron and manganese.
2.A pigment with a reddish-brown colour.
3.A light reddish-brown colour.
Synonyms: raw sienna
adjective
1.Having a reddish-brown colour.