noun a female swan.
2. pen ·noun a wing.
3. pen ·noun the internal shell of a squid.
4. pen ·noun a feather.
5. pen ·noun a small inclosure; as, a pen for sheep or for pigs.
6. pen ·noun fig.: a writer, or his style; as, he has a sharp pen.
7. pen ·vt to write; to compose and commit to paper; to indite; to compose; as, to pen a sonnet.
8. pen ·noun & ·v to shut up, as in a pen or cage; to confine in a small inclosure or narrow space; to coop up, or shut in; to inclose.
9. pen ·noun an instrument used for writing with ink, formerly made of a reed, or of the quill of a goose or other bird, but now also of other materials, as of steel, gold, ·etc. also, originally, a stylus or other instrument for scratching or graving.