Misspelling of pure laine.

Beyond doubt or being a model example; the ne plus ultra or epitome; the definitive.

(Canadian politics) Being a hardliner of the Quebec independence movement.

plural of life estate pur autre vie

(law) An estate in land which is given by a grantor to a party only for the duration of the life of a third party, and for which ownership will revert to another upon the death of that third party.