Main Entry:

boul·der

Variant(s):

also bowl·der \ˈbōl-dər\

Function:

noun

Etymology:

short for boulder stone, from Middle English bulder ston, part translation of a word of Scandinavian origin; akin to Swedish dialect bullersten large stone in a stream, from buller noise + sten stone

Date:

1617

: a detached and rounded or much-worn mass of rock

— boul·dered \-dərd\ adjective

— boul·dery \-d(ə-)rē\ adjective