Meaning of ON in English
( prep. )
Denoting performance or action by contact with the surface, upper part, or outside of anything; hence, by means of; with; as, to play on a violin or piano. Hence, figuratively, to work on one's feelings; to make an impression on the mind.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012