slaver

Etymology 1

From Middle English slaveren, from Old Norse slafra (“to slaver”), probably imitative. Doublet of slabber.

verb

1. (intransitive) To drool saliva from the mouth; to slobber.
2. (intransitive) To fawn.
3. (transitive) To smear with saliva issuing from the mouth.
4. To be besmeared with saliva.
   should I, damn'd then, / Slaver with lips as common as the stairs / That mount the Capitol c. 1611, William Shakespeare, Cymbeline, act 1, scene 7

noun

1. Saliva running from the mouth; drool.

Etymology 2

From slave (“enslave, traffic in slaves”) + -er.

noun

1. A person engaged in the slave trade; a person who buys, sells, or owns slaves.
   The continued fight between abolitionists and slavers in Missouri caused slave owners to refuge slaves to the Confederate interior. But some Union forces that made salients into rebel territory insisted that the slaves were “contraband” […] 2013, John Christgau, Incident at the Otterville Station: A Civil War Story of Slavery and Rescue, U of Nebraska Press, page 25
2. A white slaver, who sells prostitutes into illegal 'sex slavery'.
3. (nautical) A ship used to transport slaves.
   The Gulnare was a fast sailer, built for a slaver originally[.] 1887, Mrs. Dominic D. Daly, Digging, Squatting, and Pioneering Life in the Northern Territory of South Australia, page 14