Virala & Viraḷa

(adj.)
sparse, rare, thin Thig.254 (of hair, explained as vilūna-kesa Thag-a.210, i.e. almost bald spelling ḷ); Dhs-a.238 (ḷ); Dhp-a.i.122 (˚cchanna thinly covered); Pv-a.4 (in ratta-vaṇṇa-virala-mālā read better with variant reading as ratta-kaṇavīra-mālā, cp. Ja.iii.59).

connected with Vedic ṛtē excluding, without, & nirṛti perishing; cp. also Gr. ε ̓́ρημος lonely; Lat. rarus = rare