Hillel play biographical name Hil·lel \ˈhi-ləl, -ˌlel\ Definition of Hillel 1st cent. b.c. –1st cent. a.d. Jewish teacher Learn More about hillel Britannica.com: Encyclopedia article about "Hillel" Seen and Heard What made you want to look up Hillel? Please tell us where you read or heard it (including the quote, if possible).