first mortgage
noun[C]
ukusPROPERTY,FINANCE
if apersonorfinancialorganizationhas a firstmortgageon aproperty, they have therightto bepaidfirst ifitsownerfailstopaybackmoneythey haveborrowedtobuytheproperty:
If heloseshishouse,proceedsfromitssalewould go towardpayingoff the firstmortgage.