paccūsa : [m.] early morning.

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

m. 破曉

巴漢辭典 編者：(斗六) 廖文燦

Paccūsa˚ [paṭi+Ved. uṣas f.; later Sk. pratyūṣa nt.] "the time towards dawn," morning, dawn; always. in compn with either ˚kāle (loc.) at morning DhAiv.61; DA i.168; or ˚velāyaŋ (loc.) id. VvA 105, 118, 165; PvA 61; or ˚samaye (loc.) id. S i.107; J i.81, 217; SnA 80; PvA 38.

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