What is the singular possessive of ax?

Answer 1

The possessive form of the singular noun ax (or axe) is ax's (or axe's).

example: The ax's blade is very sharp. (or, The axe's blade is very sharp.)

Answer 2

The singular possessive form for the noun axe (or ax) is axe's (or ax's).

example: The axe's blade has just been sharpened.