A really fast thesaurus... with lots of synonyms.

(n) :
the name of the sixteenth letter of the Classical and Modern Greek alphabets and the seventeenth in Old Greek; an irrational constant representing the ratio of the circumference of a circle to its diameter; approximately 3.1415926535897932; usually written ?, where pi x diameter = Circumference

(v) :
to spill or mix printing type. Also, "to pie"

(adj) :
not part of the usual font character set; especially, non-Roman type or symbols as opposed to standard alphanumeric Roman type

"in computing, pi characters are entered with special combinations of keys like ctrl-alt-x, or via character sequences such as `{`."

(n) :
the name of the sixteenth letter of the Classical and Modern Greek alphabets and the seventeenth in Old Greek; an irrational constant representing the ratio of the circumference of a circle to its diameter; approximately 3.1415926535897932; usually written ?, where pi x diameter = Circumference

(v) :
to spill or mix printing type. Also, "to pie"

(adj) :
not part of the usual font character set; especially, non-Roman type or symbols as opposed to standard alphanumeric Roman type

"in computing, pi characters are entered with special combinations of keys like ctrl-alt-x, or via character sequences such as `{`."