We found one dictionary that defines the word upstruck:

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1. upstruck: Wiktionary

Definitions from Wiktionary (upstruck) ▸ adjective:  Protruding upwards. ▸ Words similar to upstruck ▸ Usage examples for upstruck ▸ Idioms related to upstruck ▸ Wikipedia articles (New!) ▸ Popular nouns described by upstruck ▸ Words that often appear near upstruck ▸ Rhymes of upstruck ▸ Invented words related to upstruck