means A long, slender predatory freshwater fish known for its toothy snout and ambush hunting, found across the Northern Hemisphere.

from From Middle English pike, a shortening of pīked fish — the 'pointed' or 'spiked' one, named for its sharp, beaklike snout. The same root gives us the weapon called a pike (a long pointed spear) and the verb 'to peak,' all clustered around an old Germanic notion of something sharp and projecting. The fish, in other words, is named for looking like a blade with fins.