Informal. a whole nother, an entirely different; a whole other.
Origin
1955-60; metanalysis of an other or another
Examples from the web for nother
Now the nurse is calling for help to have some help to give me a nother shot.
When the teliospores germinate, they produce a nother type of ti ny spore called a basidiospore.
Similarly all the materials on colon cancer are in a nother location.
Word Origin and History for nother
word formed from misdivision of another as a nother (see N for other examples), c.1300. From 14c.-16c. no nother is sometimes encountered as a misdivision of none other or perhaps as an emphatic negative; Old English had noðer as a contraction of ne oðer "no other."