navvy

n (Brit) unskilled manual labourer who works on a building site, etc （工地等的）无技术的工人.

naughtiness, naughty, nausea, nauseate, nauseating, nauseatingly, nauseous, nautical, nautical mile, nautilus, naval, nave, navel, navel orange, navigability, navigable, navigate, navigation, navigational, navigator, navy, navy blue (also navy), nay, naysayer, Nazi, Nazism, NB (also nb), NBC, NCO, NE, Neanderthal, neap, Neapolitan, near, near at hand, near by, near to, near-, near-royalty, near-sighted,