I need a pen to complete my homework.

A tool used for writing or drawing, typically consisting of a cylindrical casing filled with ink.
She borrowed a pen from her friend.
He always carries a pen in his backpack.
The teacher asked us to use a blue pen.
ballpoint pen
fountain pen
gel pen
writing instrument
stylus
marker
She wrote a letter with her pen.

A tool used for writing or drawing, typically consisting of a cylindrical body filled with ink.
He lost his favorite pen.
The teacher handed out a pen to each student.
I need a pen to sign the document.
ballpoint pen
fountain pen
ink pen
writing instrument
stylus
marker
I keep my pen in my bag.

A small, portable container for holding a writing instrument.
I found a pen in my drawer.
She carries a pen in her pocket.
He bought a new pen for school.
ballpoint pen
fountain pen
gel pen
holder
case
pouch
The sheep are in the pen.

An enclosed area for animals, especially livestock.
The cows are resting in the pen.
We built a new pen for the chickens.
The dog ran into the pen to play.
animal pen
livestock pen
fenced pen
enclosure
corral
paddock
I wrote a letter with my pen.

A tool used for writing or drawing with ink.
I signed my name with a pen.
She drew a picture using a pen.
He took notes in class with his pen.
ballpoint pen
fountain pen
ink pen
marker
stylus
quill
She will pen a poem for the contest.

To write or compose something.
He decided to pen a letter to his friend.
They will pen a story together.
I want to pen my thoughts in a journal.
pen a letter
pen a story
pen a note
write
compose
draft