An Etymological Dictionary of the German Language/Heister

by Friedrich Kluge

Heister, m., ‘beech tree,’ a Franc. and Hess. word, which also appears in LG., but is entirely unknown to UpG. and MidG.; even in the MidHG. period heister occurs; comp. Du. heester (whence Fr. hêtre). Note the local term Heisterbach.