deerfly

noun

deer·​fly ˈdir-ˌflī 

: any of numerous small horseflies (as of the genus Chrysops) that include important vectors of tularemia

Word History

First Known Use

1853, in the meaning defined above

Kids Definition

deer fly

noun

: any of numerous small horseflies that are about the size of houseflies and have a painful bite

Medical Definition

deerfly

noun

deer·​fly ˈdi(ə)r-ˌflī 

plural deerflies

: any of numerous small horseflies especially of the genus Chrysops that include important vectors of tularemia