What is the meaning of 上?

the above

the top (position or direction)

the surface

superiority (in skill, age, level, etc.)

suffix addressing to a superior

a surname

upper, over

a place name

the start

a high place; the top

one with higher rank

a place name

a surname

Same as かみ (kami) above

a place name

the first volume in a two- or three-volume set

from the standpoint of...

aboard (a plane, ship, etc.)

above, in, on

a surname

Source: wiktionary.org