Lewis Short
(verb) : sponso, āre, sponsus
* To betroth, affiance, espouse (post-class.).
* Lit.: aliquam,Dig. 23, 2, 38; Tert. Vel. Virg. 11.
* Trop.: animam,Paul. Nol. Carm. 18, 43: et sponsabo te mihi in sempiternum,Vulg. Osee, 2, 19; 2, 20.
Charlton T. Lewis, Charles Short, A Latin Dictionary