We found one dictionary that defines the word duplock:

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1. Duplock: Wiktionary

Definitions from Wiktionary (Duplock) ▸ noun:  A surname. ▸ Words similar to duplock ▸ Usage examples for duplock ▸ Idioms related to duplock ▸ Wikipedia articles (New!) ▸ Popular adjectives describing duplock ▸ Words that often appear near duplock ▸ Rhymes of duplock ▸ Invented words related to duplock