Is “Backstop” a Scrabble word?
Yes
BACKSTOP
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 Backstop
noun
1.A thing or a person put in the rear or in the back of something to reinforce, hold, support.
2.A default arrangement that holds if all else fails.
3.A wall or fence behind home plate.
verb
1.To serve as backstop for.
2.To bolster, support.