Third-person singular simple present indicative form of tread.(verb)
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Use "treads" in a sentence
"That he says all this below a website banner that has him posed with a cup of tea and an umbrella in front of an airship and a row of Victorian style houses atop a big, hulking city on treads is just laughable."
"Anything with wheels or treads is relegated to the farmers and lower classes."
"LA Times, Palin treads carefully between fundamentalist beliefs and public policy"