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heavy duty

 - 1 dictionary result

heav⋅y-du⋅ty

[hev-ee-doo-tee, -dyoo-]
–adjective
1. providing an unusual amount of power, durability, etc.: heavy-duty machinery; heavy-duty shoes.
2. very important, impressive, or serious: heavy-duty involvement; heavy-duty questions.

Origin:
1910–15
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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