The Collaborative International Dictionary
Imburse
Imburse \Im*burse"\, v. t. [Pref. im- in + burse: cf. F. embourser to put into one's purse. See Burse, and Purse.] To supply or stock with money. [Obs.]
Douglas Harper's Etymology Dictionary
imburse
1520s, from Medieval Latin imbursare, from assimilated form of in- "into, in, on, upon" (see in- (2)) + bursa "purse." Related: Imbursement.
Wiktionary
imburse
vb. (context obsolete English) To supply or stock with money.