stalking (Noun) — A hunt for game carried on by following it stealthily or waiting in ambush.
stalking (Noun) — The act of following prey stealthily.
stalking (Verb) — Walk stiffly.
stalking (Verb) — Follow stealthily or recur constantly and spontaneously to. ex. "her ex-boyfriend stalked her"
stalking (Verb) — Go through (an area) in search of prey. ex. "stalk the woods for deer"