py

As a letter s

is the letter s with a.

As a symbol py is

the iso 3166-1 two-letter (alpha-2) code for paraguay.

As an initialism app

is actinobacllus pleuropneumoniae.

As a symbol py is

the iso 3166-1 two-letter (alpha-2) code for paraguay.

As a noun go

is water.

As a symbol py is

the iso 3166-1 two-letter (alpha-2) code for paraguay.

As a noun byre

is (chiefly|british) a barn, especially one used for keeping cattle in.

As a symbol py is

the iso 3166-1 two-letter (alpha-2) code for paraguay.