adverb taking the 'to' particle, taru-adjective
soaring high; towering greatly
Obsolete literary term describing something that rises high and imposingly, used adverbially with と or as a たる adjective. Not used in modern Japanese.
古い漢文では「巋然としてそびえる」のように使われた。
In old kanbun texts, it was used like 'towering loftily'.