taru-adjective, adverb taking the 'to' particle
towering; lofty; precipitous; jutting upward
Literary description of mountains, cliffs, or structures that rise steeply and stand out sharply. Often used in classical or poetic contexts.
The landscape of towering mountains stretching on is just like an ink-wash painting.
The castle stood towering precipitously atop the cliff.
A Sino-Japanese compound of 突 (thrust, protrude) and 兀 (high and level on top, bald). The exact historical derivation is uncertain, but the combination conveys a sense of something jutting upward steeply.