[pen-suh
l] 
noun, verb, -ciled, -cil⋅ing or (especially British) -cilled, -cil⋅ling.| 1. | a slender tube of wood, metal, plastic, etc., containing a core or strip of graphite, a solid coloring material, or the like, used for writing or drawing. |
| 2. | a stick of cosmetic coloring material for use on the eyebrows, eyelids, etc. |
| 3. | anything shaped or used like a pencil, as a stick of medicated material: a styptic pencil. |
| 4. | a narrow set of lines, light rays, or the like, diverging from or converging to a point: a pencil of sunlight. |
| 5. | a slender, pointed piece of a substance used for marking. |
| 6. | style or skill in drawing or delineation: He favored the late products of the artist's pencil. |
| 7. | Mathematics. the collection of lines, planes, or surfaces passing through a given point or set of points and satisfying a given equation or condition. |
| 8. | Archaic. an artist's paintbrush, esp. for fine work. |
| 9. | to write, draw, mark, or color with, or as if with, a pencil. |
| 10. | to use a pencil on. |
| 11. | pencil in, to schedule or list tentatively, as or as if by writing down in pencil rather than in ink: I'll pencil you in for ten o'clock. |