Comparative form meaning more gin-like, more resembling a gin, or more characteristic of a ginnery or ginning process.
From 'ginny' (adjective form related to gin) + '-er' (comparative suffix), similar to how 'happy' becomes 'happier' or 'full' becomes 'fuller'.
This rare comparative form shows how English speakers naturally create gradations for any adjective—even specialized industrial terms can get this treatment, though it's rarely recorded in historical documents.
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