/sin'seuh mil"euh/ , n.
marijuana from seedless female hemp plants that contain very high levels of THC.
[ 1975-80; sin without ( sine ) + semilla seed, appar. continuation of OSp dial. semilia, by dissimilation from LL seminia, neut. pl. (taken as fem. sing.) of seminium, deriv. of L semen seed, SEMEN ]