Definition of pencil:
; writing utensil that uses graphite
(commonly referred to as lead
). Regular pencils usually have a graphite shaft surrounded by wood. A pencil sharpener is used to cut away the wood and leave a fine tip on the pencil. Also available in a mechanical
version where the graphite length can be adjusted and sharpening is not needed
to squeeze something (meeting, feature, appointment, etc.) into a tight schedule; to tentatively
make a booking
"I am very busy today but I can pencil you in at 3 p.m."