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Webster 1913 Edition

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Adj.

Bulky; unwiedly; of great size and bulk; ponderous.

[R.]

“A huge hulking fellow.”

H. Brooke.

Adj.

Bulky; unwieldy. [Not used.]

hulky ‎(comparative hulkier, superlative hulkiest)

Large; hulking.
- 2009 March 22, Susanna Hamner, “Harley, You’re Not Getting Any Younger”, in New York Times:
  After riding high for two decades, the company that makes the hulky bikes that devoted riders affectionately call Hogs is sputtering.