This is the 13077th most frequent Russian word.
маслами
"Маслами" means "oils" (instrumental plural form of "масло").
The word 'маслами' is the instrumental plural form of 'масло' (oil), used to describe the tool or means by which the action is performed, in this case, 'oils'.
Я готовлю еду с разными маслами.
I cook food with different oils.
Here, 'маслами' is used in the instrumental case plural to indicate the substance used for lubrication, showing its functional application.
Маслами была смазана дверь, чтобы она перестала скрипеть.
The door was lubricated with oils to stop it from squeaking.
In this sentence, 'маслами' defines the method or tool provided by the ancient healers, emphasizing its instrumental role in the action described.