Is “Gunlock” a Scrabble word?
Yes
GUNLOCK
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 Gunlock
/ˈɡʌnˌlɒk/
noun
1.A mechanism fitted to a cannon that fires it when a cord is pulled.