vinicchaya : [m.] decision; judgement; trial; discrimination.

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

Vinicchaya [vi+nicchaya; cp. Vedic viniścaya] 1. dis- crimination, distinction, thought, (firm) opinion; thorough knowledge of ( -- ˚) A iii.354 (pāpakamma˚); Sn 327 (dhamma˚), 838 (=dvāsaṭṭhi diṭṭhi -- vinicchayā Nd1 186), 867 (˚ŋ kūrute; cp. Nd1 265); J iii.205 (attha˚); PvA 1, 112, 210 (kūṭa˚), 287. -- 2. decision; (as t. t. in law:) investigation, trial, judgment (given by the king or his ministers) D ii.58 (with ref. to lābha, expld as deciding what to do with one's gains)=iii.289=A iv.400=Vbh 390 (expld at VbhA 512, where vinicchaya is said to be fourfold, viz. ñāṇa˚, taṇhā˚, diṭṭhi˚, vitakka˚); J ii.2. -- 3. court house, hall of judgment J i.176; iii.105; iv.122, 370; vi.333; Miln 332 (vinaya˚, i. e. having the Vinaya as the law court in the City of Righteousness). -- 4. (as t. t. in logic & psychology:) (process of) judgment, detailed analysis, deliberation, consideration, ascertainment J v.60 (˚ŋ vicāreti); VbhA 46 sq. (according to attha, lakkhaṇa, etc.), 83 sq. (id.); KhA 23, 75.
   -- kathā analytical discussion, exegesis, interpretation Vism 16; VbhA 291 (opp. pāḷi -- vaṇṇanā). -- ññū clever in deciding or giving judgment J iii.205; v.367 (a˚). -- ṭṭhāna place of judgment, law court J v.229; DhA iii.141; iv.215. -- dhamma law practice J. v.125; DhA iii.141. -- vīthi process of judgment (in logic): see Cpd. 241. -- sālā the law court(s) J iv.120; DhA iii.380.

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