( BrE ) ( NAmE lust·er ) / ˈlʌstə(r); NAmE / noun [ U ]
1.
the shining quality of a surface
SYN sheen :
Her hair had lost its lustre.
2.
the quality of being special in a way that is exciting :
The presence of the prince added lustre to the occasion.
—compare lacklustre
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WORD ORIGIN
early 16th cent.: from French , from Italian lustro , from the verb lustrare , from Latin lustrare illuminate.