unpen

unpen

(ʌnˈpɛn)
vb (tr)
1. (Agriculture) (of animals, livestock, etc) to release from a pen or enclosure
2. (of ideas or emotions) to vent, to let out

un•pen

(ʌnˈpɛn)

v.t. -penned, -pen•ning.
to release from confinement.
[1585–95]