- any of various instruments for writing or drawing with ink or a similar substance.
- a detachable metal penpoint, filled by dipping or with a quill; nib.
- such a penpoint with its penholder.
- fountain pen.
- ballpoint pen.
- the pen as the instrument of writing or authorship: The pen is mightier than the sword.
- a person's style or quality of writing: He writes with a witty, incisive pen.
- a writer: I leave this story to abler pens.
- the profession of writing: a master of the pen.
- a pen-shaped device having a cartridge filled with a drug or medication: an insulin pen with disposable needles.
- stylus (def. 3).
- Ornithology.
- a quill.
- a pinfeather.
- something resembling or suggesting a feather or quill.
- an internal, corneous or chitinous, feather-shaped structure in certain cephalopods, as the squid.
- to write with or as with a pen; put down in writing: to pen an essay.
- to draw with or as with a pen: to pen a sketch.
- a small enclosure for domestic animals.
- animals so enclosed: We have a pen of twenty sheep.
- an enclosure used for confinement or safekeeping: We have built several pens to hold our harvest of corn.
- playpen.
- bull pen.
- a dock having a protective concrete structure overhead, used to service and repair submarines.
- to confine in or as in a pen.
- a female swan.
- variant of pene- before a vowel: penannular.
- peninsula.
- International Association of Poets, Playwrights, Editors, Essayists, and Novelists.
- an implement for writing or drawing using ink, formerly consisting of a sharpened and split quill, and now of a metal nib attached to a holder
- the writing end of such an implement; nib
- style of writing
- the pen
- writing as an occupation
- the written word
- the long horny internal shell of a squid
- to write or compose
- an enclosure in which domestic animals are kept
- any place of confinement
- a dock for servicing submarines, esp one having a bombproof roof
- to enclose or keep in a pen
- US and Canadian informal short for penitentiary (def. 1)
- a female swan
- International Association of Poets, Playwrights, Editors, Essayists, and Novelists
- Peninsula