From Longman Dictionary of Contemporary Englishpetroleum jellypeˌtroleum ˈjelly noun [uncountable] MHVaseline
Examples from the Corpus
petroleum jelly• Have you rubbed on petroleum jelly or applied any necessary plasters?• A little oil or petroleum jelly on the thread will help.• Take any prescribed drugs with your breakfast and apply the plasters, petroleum jelly etc to help you on your way. 