Twas brillig, and the slithy toves
Did gyre and gimble in the wabe;
All mimsy were the borogoves,
And the mome raths outgrabe.
It's a word. A word formed from blending two or more words together to form a new one. In the novel "Through The Looking Glass" Humpty Dumpty explains the practice of combining words in various ways by telling Alice,
"You see it's like a portmanteau -- there are two meanings packed up into one word."
If you are struggling with the burning question "Is there a word for that?", you've come to the right place. Just make one up.