árṇa as, am m. n. a wave, flood stream RV. BhP

• (figuratively applied to the) tumult of battle RV. v, 50, 4

• m. a letter, syllable RāmatUp. N. of a metre (comprising ten feet, and belonging to the class called Daṇḍaka)

• the teak tree ( arjunâpama above) L

• N. of a man ( arna citráratha below) (ā), f. a river L., m. pl., N. of a people BhP