SLUR, verb transitive 1. To soil; to sully; to contaminate; to disgrace. 2. To pass lightly; to conceal. With periods, points and tropes he slurs his crimes. 3. To cheat; to trick. [Unusual.] 4. In music, to sing or perform in a smooth gliding style. SLUR, noun 1. Properly, a black mark; hence, slight reproach or disgrace. Every violation of moral duty should be a slur to the reputation. 2. In music, a mark connecting noest that are to be sung to the same syllable, or made in one continued breath of a wind instrument, or with one stoke of a stringed instrument.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI