Lewis & Short

oppignĕro (obp-), āvi, ātum, 1, v. a. [ob-pignero], to give as a pledge, to pledge, pawn (rare but class.).

  1. I. Lit.: libelli pro vino etiam saepe oppignerabantur, Cic. Sest. 51, 110: anulum, Mart. 2, 57, 7.
  2. II. Trop.: filiam. Ter. Heaut. 4, 5, 46: verbo se oppignerare, Sen. Ben. 3, 5, 2.