taru-adjective, adverb taking the 'to' particle
Literary and rare; used almost exclusively in the four-character compound 光彩陸離 (こうさいりくり) meaning 'dazzlingly brilliant' or 'radiant'. Not used independently in modern Japanese.
See also: 光彩陸離
「光彩陸離」という四字熟語で、まばゆい輝きを表す。
The four-character idiom 光彩陸離 expresses a dazzling brilliance.