Definitions

1. proper noun

a surname, especially of American origin, referring to a person or people bearing this name, notably John Sidney McCain, an American politician.

“John McCain, a prominent US senator, ran for the presidential election in 2008.”

2. verb

to support or advocate for something, often in an enthusiastic or passionate manner, often used in relation to John McCain’s political campaigns.

“He mccained for the conservative candidate in the local election.”