escalade
noun
es·ca·lade ˈe-skə-ˌlād 
-ˌläd
: an act of scaling especially the walls of a fortification
escalade transitive verb
escalader noun
Word History
Etymology
French, from Italian scalata, from scalare to scale, from scala ladder, from Late Latin — more at scale entry 5
First Known Use
1598, in the meaning defined above