Etymology
From Latin olitōrius (“of or related to gardeners, produce, or vegetables”), from olitor (“gardener, seller of vegetables or herbs”), from olus + -itō (“forming frequentative verbs”) + -or (“-er: forming agent nouns”), variant of holus (“vegetable”), from Old Latin helus, believed to come from unattested Proto-Italic *helos, from Proto-Indo-European *ǵʰélh₃-s ~ *ǵʰl̥h₃-és, from *ǵʰelh₃- (“green, yellow”) + *-s. Cognate with Proto-Germanic *gulaz (“yellow”).