Is “Bulking” a Scrabble word?
Yes
BULKING
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 Bulking
verb
1.To appear or seem to be, as to bulk or extent.
2.To grow in size; to swell or expand.
3.To gain body mass by means of diet, exercise, etc.
noun
1.A period of intentional weight gain.