essence

detailed, conscientious / pure, refined

polishing, refining / care, conscientiousness / something polished or refined, particularly polished white rice / vim and vigor, energy in doing things / life force, vitality, the energy of living

rice polishing, rice milling / polished or milled rice / excellence

(surgery) vasectomy

a pipe or tube, such as that made of bamboo, wood, metal, or rubber / a shuttle for weaving with a loom (from the way the earliest shuttles were made from bamboo tubes)

tube; pipe; duct; tract

reproductive organ; genitalia

androgen

sexual reproduction