Is “Rivulet” a Scrabble word?
Yes
RIVULET
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 Rivulet
/ˈɹɪv.jə.lət/
noun
1.A small brook or stream; a streamlet.
“A rivulet of tears ran down his face.”
2.Perizoma affinitatum, a geometrid moth.