Seals a door, making an odd squelching noise.
References from the canon
- Hermione, Harry, and several other members of the D.A. used this spell to try to block the attacking Death Eaters during the battle of the Department of Mysteries (OP35).
- Delphi uses this to lock the doors inside St Jerome's Church so that none of the other wizards can help Harry Potter during their duel (CC4.11).
"colligo" L. to bind together + "portus" L. door