Third-person singular simple present indicative form of backfill.(verb)
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Use "backfills" in a sentence
"The Cubs 'lease at Hohokam lasts only until 2016 at the latest, meaning Mesa will have the Cactus League's biggest stadium sitting empty in a few years unless it "backfills" with another Major League team."
"Now the GOP backfills to try to appear onboard, while the secret meetings with bankers on how to minimize new regulations continue."
"While most of the $100 billion for education just partially backfills cuts, it forced states to acknowledge the Department of Education's priorities of standards, accountability, and choice."