Emily Dickinson Lexicon

rare (-er), adj. [L. rār-us, thin.] (webplay: air, degree, flower, fond, found, gold, seen).

1. Uncommon; unusual; exceptional; extraordinary; special; singular; unique; out of the ordinary; seldom encountered; not frequently found or experienced.
2. Infrequent; irregular; intermittent; scattered.
3. [Fig.] ethereal; invisible; incorporeal; phantom; spirit-like; heavenly; celestial; glorified; immortal; imperceptible to physical senses.