Lyric discussion by srsh 

it is "dancer". Check this From Amazon.com:

"Those familiar with the band’s oeuvre will recognize their signature in the synth-heavy “Human,” four minutes of sweeping, epic rock, on which Flowers sings: “My sign is vital/ My hands are cold/ And I’m on knees, looking for the answer/ Are we human, or are we dancer?” He says the lyrics were inspired by a disparaging comment made by Hunter S. Thompson about how America was raising a generation of dancers. But the song also had some help from album producer Stuart Price (aka Jacques LuCont), known for his work with Madonna and Missy Elliot, and who’d previously remixed “Mr. Brightside.” “He was the icing on the cake,” says Stoermer."

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