Main Entry: tu·mu·lus

Pronunciation: \ˈtü-myə-ləs, ˈtyü-, ˈtə-\

Function: noun

Inflected Form(s): plural tu·mu·li \-ˌlī, -ˌlē\

Etymology: Middle English, from Latin; akin to Latin tumēre to swell — more at thumb

Date: 15th century

: an artificial hillock or mound (as over a grave); especially : an ancient grave : barrow