eta : [demons. pron.] that; this. (mas. sing.); takes this form in some cases.

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

eta– 1. ( for 2. s. v. ) , mfn. come near , approached cf. RV. cf. Nir. &c. [ 227,3 ].

eta 2
éta (for 1. 4. ê), mf(ā and énī Pāṇ. 4-1, 39)n. (√i Uṇ. iii, 86), 'rushing', 'darting'
• of a variegated colour, varying the colour, shining, brilliant RV. AV. TS. VS. &c
• m. a kind of deer or antelope RV.
• the hide of the same RV.
• variegated colour T.
• (ā), f. a hind MBh. iii, 8384
• (enī), f. a river Nigh.

Sanskrit-English Dictionary, by M. Monier William

eta– 2. ( for 1. 4. [ e ] ) , mf ( [ ā ] and [ enI ] cf. Pāṇ. 4-1 , 39)n. ( √ [ i ] cf. Uṇ. iii , 86 ) , ` rushing ' , ` darting '; of a variegated colour , varying the colour , shining , brilliant cf. RV. cf. AV. cf. TS. cf. VS. &c.; m. a kind of deer or antelope cf. RV.; the hide of the same cf. RV.; variegated colour cf. T.; ( [ ā ] ) , f. a hind cf. MBh. iii , 8384; ( [ enῑ ] ) , f. a river cf. Nigh.

Sanskrit-English Dictionary, by M. Monier William