taru-adjective, adverb taking the 'to' particle
smooth circular motion; rolling smoothly; spherical
Literary or formal word describing something moving in a smooth, round, or rolling manner. Often used adverbially with と (円転と). The gloss 'orotund' is rare and refers to a full, round sound or speech.
The ball rolled away with a smooth circular motion.
His speech resounded with a full, round tone.
suave; tactful; smooth · versatile; adaptable
Compound of 円 (round, circle) and 転 (roll, revolve). The exact historical derivation is uncertain; the word is a literary Sino-Japanese term.