Etymology: Middle English pensel, from Middle
French pincel, from (assumed) Vulgar Latin penicellus, alteration of Latin penicillus, diminutive of peniculus brush, from diminutive of penis tail, penis.
A male organ of copulation that is
small or narrow in circumference or width, lacking usual or desirable bulk, which that in male mammals including humans, usually is not able to cause the opposite
sex to have an explosive discharge of neuromuscular tensions accompanied by vaginal contractions.