nightstick

n (US) policeman's truncheon 警棍.

night-long, night-school, night-shirt, night-soil, night-staff, night-time, night-watch, night-watchman, nightcap, nightfall, nightgown, nightie (also nighty), nightingale, nightjar, nightly, nightmare, nightmarish, nights, nightshade, nightshirt, nihilism, nihilist, nihilistic, nil, Nile, nimble, nimbleness, nimbly, nimbus, nincompoop, nine, nine-, ninepin, nineteen, nineteenth, ninetieth, ninety, ninny, ninth, ninthly,