From Proto-Basque *sapar (compare Basque sapar, and txaparro in the Salazarese dialect). *<span class="searchmatch">saparr</span> bramble, thicket bush Basque Etymology...
*sapar bramble, thicket bush <span class="searchmatch">Aquitanian</span>: *<span class="searchmatch">saparr</span> Basque: sapar, txapar R. L. Trask (2008) “lahar”, in Max W. Wheeler, editor, Etymological Dictionary...