What is the meaning of على?

on, over

against

expresses obligation

despite

on condition, provided

to climb

to raise (a building)

to raise, to lift, to elevate (someone/something)

to exalt

feminine plural of أَعْلَى (ʔaʕlā, higher, upper; superior)

on, upon

on, over

against

despite

to raise (the volume, one's voice, etc.)

on; upon; onto

against

expresses obligation

on; upon; onto

with a hint of

about (a topic)

to (a place)

Used with an adjective given the definite article, marking it as an adverb

to, toward

on, onto, over

at, on

must, should

to raise (the volume, one's voice, etc.)

Source: wiktionary.org