Crossword Genius

Hill builder (3)

Ross

I believe the answer is:

ant

(Other definitions for ant that I've seen before include "` `Go to the ... thou sluggard' '" , "Termite" , "colonist" , "Little boy" , "Proverbially hard-working insect" .)

I've seen this clue in the Newsday, the King Feature Syndicate, the LA Times and the Penny Press.
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