Dictionary
2 ENTRIES FOUND:

regulus

noun reg·u·lus \ˈre-gyə-ləs\

Definition of REGULUS

1
capitalized :  a first-magnitude star in the constellation Leo
2
[Medieval Latin, metallic antimony, from Latin] :  the more or less impure mass of metal formed beneath the slag in smelting and reducing ores

Origin of REGULUS

New Latin, from Latin, petty king, from reg-, rex king — more at royal
First Known Use: 1559

Regulus

biographical name Reg·u·lus \ˈre-gyə-ləs\

Definition of REGULUS

Marcus Atilius d ca 250 b.c. Rom. gen.

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