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Webster 1913 Edition

Adj.

Having much beef; of the nature of beef; resembling beef; fleshy.

beefy ‎(comparative beefier, superlative beefiest)

Similar to, or tasting like beef.
Containing beef.
(informal) Strong or muscular.
The barman was a big, beefy guy with his sleeves rolled up and tattoos on his arms.
(informal) Sturdy; robust.
The software slows down even a beefy computer.

similar to beef

containing beef

muscular — see muscular

robust — see robust