pivot on/around

: a shaft or pin on which something turns

: a person, thing, or factor having a major or central role, function, or effect

: a key player or position

: turning on or as if on a pivot

: pivotal

: to turn on or as if on a pivot

: to provide with, mount on, or attach by a pivot

: to cause to pivot

: in a circle or in circumference

: in, along, or through a circuit

: on all or various sides : in every or any direction

: on all sides of

: so as to encircle or enclose

: so as to avoid or get past : on or to another side of

: about

: being in existence, evidence, or circulation