We found one dictionary that defines the word retcher:

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1. retcher: Wiktionary

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