Is “Lockstep” a Scrabble word?
Yes
LOCKSTEP
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 Lockstep
/ˈlɒkstɛp/
noun
1.A step whereby the toe of one man is brought very close to the heel of the man in front.
2.Close connection, unison, rigid synchronization.
3.An inflexible, rigid or stifling pattern.