n.
Variant: also bowl · der
Pronunciation: ' b ō l-d ə r
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 \ -d ə rd \ adjective
– boul · dery \ -d( ə -)r ē \ adjective