1an instrument for writing or drawing with ink, typically consisting of a metal nib or ball, or a nylon tip, fitted into a metal or plastic holder: figurativeinvective flowed from the journalists' pens
(the pen) the occupation of writing:she was forced to support herself by the pen
an electronic pen-like device used in conjunction with a writing surface to enter commands or data into a computer.
2 Zoology the tapering cartilaginous internal shell of a squid.
write or compose:Olivia penned award-winning poetry
pen and ink
British rhyming slang a stink.
the pen is mightier than the sword
proverb writing is more effective than military power or violence.