viceroy

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vice·roy / ˈvīsˌroi/ • n. 1. a ruler exercising authority in a colony on behalf of a sovereign.2. a migratory orange and black butterfly (Limenitis archippus) that closely resembles the monarch but is typically somewhat smaller. The caterpillar feeds on willow leaves, and the adult mimics the unpalatable monarch.DERIVATIVES: vice·roy·al / ˌvīsˈroi-əl/ adj.vice·roy·ship / ship/ n.

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