black rat

noun

: a rat of the genus Rattus (R. rattus) that infests houses and has been the chief vector of bubonic plague

Dictionary Entries Near black rat

Cite this Entry

“Black rat.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/black%20rat. Accessed 28 May. 2024.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!