Is “Overflow” a Scrabble word?
Yes
OVERFLOW
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 Overflow
/ˈəʊvəˌfləʊ/
noun
1.The spillage resultant from overflow; excess.
2.Outlet for escape of excess material.
3.The situation where a value exceeds the available numeric range.
verb
1.To flow over the brim of (a container).
“The river overflowed the levee.”
2.To cover with a liquid, literally or figuratively.
“The flash flood overflowed most of the parkland and some homes.”
3.To cause an overflow.