/ ˈmʌskjələ(r); NAmE / adjective
1.
connected with the muscles :
muscular tension / power / tissue
2.
(also informal muscly / ˈmʌsli; NAmE /) having large strong muscles :
a muscular body / build / chest
He was tall, lean and muscular.
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WORD ORIGIN
late 17th cent.: alteration of earlier musculous , in the same sense.