Is “Blocs” a Scrabble word?
Yes
BLOCS
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 Blocs
/blɒks/
noun
1.A group of voters or politicians who share common goals.
2.A group of countries acting together for political or economic goals, an alliance: e.g., the eastern bloc, the western bloc, a trading bloc, the Eurozone, the European Union.
“Climate change a security risk for EU, say bloc's foreign policy chiefs (EUobserver)”