araṇa : [adj.] peaceful; passionless.

A.P. Buddhadatta Mahathera, Concise Pali-English and English-Pali Dictionary [available as digital version from Metta Net, Sri Lanka]

Araṇa1 (adj. -- n.) [Vedic araṇa fr. *ara √ṛ, which as abl. ārā is used as adv. far from, cp. P. ārakā. Orig. meaning "removed from, remote, far". See also arañña]. (adj.) living in solitude, far from the madding crowd M iii.237 (˚vibhanga -- sutta); S i.44, 45; J i.340 (tittha˚?).

Pali-English Dictionary, TW Rhys Davids, William Stede,

araṇa(cp. [ārakā遠離(adv.)]): I. a. 遠離 II. n. 無諍

巴漢辭典 編者：(斗六) 廖文燦

Araṇa  阿蘭那  It means a place of stillness, which is to practice pure conduct and to cultivate without the attachment of self and the Four Marks.

漢英-英漢-英英佛學辭典字庫

araṇa 1
áraṇa mf(ī) n. (√ṛ), foreign, distant RV. AV. ŚBr
• (am), n. (only for the etym. of araṇi) the being fitted (as a piece of wood) Nir
• a refuge BhP
araṇa 2
a-raṇa mfn. without fighting (as death, i.e. natural death) Bhaṭṭ. [Page 86, Column 3]

Sanskrit-English Dictionary, by M. Monier William