"I know that this is a series resistor. But I named it shunt resistor"

(refrains from Humpty Dumpty remark)

"because it's [sic] function is the same as standard shunt resistor commonly found with current meters"

Yes - I wondered if that might have been your logic. Just checking.
As Einstein would say, "it all depends on your frame of reference!"

BTW: "it's" (with the apostrophe) is an abbreviation of "it is", "it was", etc; the possessive form is "its" (without the apostrophe) - like "his" and "hers."
End of lesson. Class dismissed. Have a nice weekend!