(it's a) small world

:  that one — compare he, its, she, they

: used as subject of an impersonal verb that expresses a condition or action without reference to an agent

: used with many verbs as a direct object with little or no meaning

:  the player in a game who performs the principal action of the game (such as trying to find others in hide-and-seek)

:  having comparatively little size or slight dimensions

:  lowercase

:  minor in influence, power, or rank

:  in or into small pieces

:  without force or loudness

:  in a small manner

:  a part smaller and especially narrower than the remainder

:  small-sized products

:  smallclothes

:  the earthly state of human existence

:  the earth with its inhabitants and all things upon it

:  individual course of life :  career

:  of or relating to the world

:  extending or found throughout the world :  worldwide

:  involving or applying to part of or the whole world