(transitive) To release (something) from pinions; to free from restraint.

Of a bird: not having the pinions of its wings cut off, or its wings otherwise disabled, to prevent it from flying. / (archaic, also figuratively) Free from restraint.

simple past tense and past participle of unpinion

Not pinpointable.

Not pinpointed.

That cannot be pinned down; ephemeral, mercurial.

Not pinked; of clothing or fabric, not ornamented with holes or scallops.