Dictionary Definition:
Ruci (f.) [fr. ruc, cp. Vedic ruc (f.) light, Classic Sk. ruci in meaning "pleasure"] 1. splendour, light, brightness Sn 548 (su˚ very splendid; SnA 453=sundara -- sarīrappabha). -- 2. inclination, liking, pleasure PvA 59 (˚ŋ uppādeti to find pleasure, to be satisfied). -- aruci aversion, dislike Th 2, 472. -- ruci object of pleasure J v.371. -- ruciyā (abl.) in the pleasure (of), by the liking (of) (cp. No. 3), in phrases attano ruciyā (attano citta -- ruciyā: so read for ˚ruciyaŋ!); as one pleases, by one's own free will, ad lib. J i.106; iv.281; PvA 59; parassa r. pavattati to live by the pleasure (gratiâ) of somebody else, i. e. to be dependent on others DA i.212. -- yathā ruciŋ according to liking or satisfaction, fully, amply Mhvs 4, 43; 5, 230; PvA 88, 126, 242. <-> 3. In dogmatic language used in the sense of "will" or "influence" in combn diṭṭhi, khanti, ruci one's views, indulgence & pleasure (=will), i. e. one's intellectual, emotional & volitional sphere, e. g. Vin i.70; Sn 781 (without khanti, but see defn at Nd1 65); also with saddhā, anussavo, ākāraparivitakke, diṭṭhinijjhānakhanti M ii.170, 218; 234; contrasted with dhamma D iii.40; Vbh 245 (in defn of "idha": cp. same at Ps i.176 and Nd2 145), 325, 328. aññatra ruciyā under the influence of someone else's will S ii.115; iv.138. See also bhāva 2a.