pencilpen‧cil1 /ˈpɛnsəl/ ●●● noun [countable, uncountable] a thing that you use for writing and drawing, made of wood containing a black or colored center: Do the math problems in pencil (=using a pencil), not pen. a sharp pencil [Origin: 1300–1400 Old French pincel “paintbrush,” from Latin penicillus “little tail”]