Is “Seiches” a Scrabble word?
Yes
SEICHES
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 Seiches
noun
1.A short-term standing wave oscillation of the water level in a lake, characteristic of its geometry