COARSE, adjective 1. Thick; large or gross in bulk; comparatively of large diameter; as coarse thread or yarn; coarse hair; coarse sand. This seems to be the primary sense of the word; opposed to fine or slender. Hence, 2. Thick; rough; or made of coarse thread or yarn; as coarse cloth. 3. Not refined; not separated from grosser particles, or impurities; as coarse metal; coarse glass. 4. Rude; rough; unrefined; uncivil; as coarse manners. 5. Gross; not delicate. The coarser tie of human law. 6. Rude; rough; unpolished; inelegant; applied to language. 7. Not nicely expert; not accomplished by art or education; as a coarse practitioner. 8. Mean; not nice; not refined or elegant; as a coarse perfume; a coarse diet.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI