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We found one dictionary with English definitions that includes the word portrum:
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General (1 matching dictionary)

1. Portrum: Rhymezone [home, info]

Quick definitions from WordNet (Portrum) ▸ name:  A surname (very rare: popularity rank in the U.S.: #45846) ▸ Words similar to portrum ▸ Usage examples for portrum ▸ Idioms related to portrum (New!) ▸ Words that often appear near portrum ▸ Rhymes of portrum ▸ Invented words related to portrum