noun
plural -cils
an instrument used for writing and drawing that has a hard outer part and a black or colored center part [count]
verb
plural -cils; US -ciled or Brit -cilled; US -ciling or Brit -cilling
[+ obj] :to draw or write (something) with a pencil
pencil in
[phrasal verb]
pencil (someone or something) in or pencil in (someone or something) :to put (someone or something that may be changed later) on a schedule, list, etc.