rat-out russian

• сдать

  take an exam, pass an exam

  rat out, turn in to the authorities

  give, distribute, donate

  hand over, give up, surrender

• заложи́ть

  pawn

  to lay forth, create, establish

  mortgage

  rat-out, betray

  plant, put

• простуча́ть

  to tap, to knock, to drum

  to rat out, to inform on, to squeal (on)