Lewis Short
(verb) : rĕ-gusto, āvi, ātum, 1
* To taste again or repeatedly (very rare).
* Lit.: bilem suam regustantes,Sen. Prov. 3, 13: regustatum digito terebrare salinum,i. e. licked out,Pers. 5, 138.
* Trop.: illam (laudationem Lollii) legi, volo tamen regustare,i. e. to read again,Cic. Att. 13, 48, 2: crebro regusto litteras,id. ib. 13, 13, 3: ille Latinus ἀττικισμὸς ex intervallo regustandus, id. ib. 4, 17, 1.
Charlton T. Lewis, Charles Short, A Latin Dictionary