bu
From LSJ
Latin > English (Lewis & Short)
bu: = βου,
I a Greek prefix, which, in composition, expresses the idea of greatness: Graeci assueti magnis et amplis rebus praeponere βου, a magnitudine scilicet bovis. Hic est, quod grandes pueri βούπαιδας appellant et mariscam ficum βούσυκον, Paul. ex Fest. p. 109 Müll.; Varr. R. R. 2, 5, 4 [cf. Engl. horse-cucumber, elephant folio, etc.].
bu: v. bua.
Latin > French (Gaffiot 2016)
(1) bū, (en comp.) élément senti comme augmentatif (= de bœuf) : Varro R. 2, 5, 4.
(2) bu, c. bua : P. Fest. 109.