• (n.) The anacardiaceous tree Pistacia vera, which yields the pistachio nut; also, the nut itself and the flavoring extract prepared from it. Found on http://thinkexist.com/dictionary/meaning/pistache/
Pis·tache' noun [ Middle English pistace , from French pistache . See Pistachio .] (Botany) The anacardiaceous tree Pistacia vera , which yields the pistachio nut; also, the nut itself and the flavoring extract prepared from it. Found on http://www.encyclo.co.uk/webster/P/95