Is “Callback” a Scrabble word?
Yes
CALLBACK
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 Callback
noun
1.The return of a situation to a previous position or state.
2.A return telephone or radio call; especially one made automatically to authenticate a logon to a computer network.
3.A product recall because of a defect or safety concern.
Synonyms: running gag