Definitions
1.noun(plural phalanxes) An ancient Greek and Macedonian military unit that consisted of several ranks and files (lines) of soldiers in close array with joined shields and long spears.
2.noun(historical sociology) A Fourierite utopian community; a phalanstery.
3.noun(plural phalanxes) A large group of people, animals or things, compact or closely massed, or tightly knit and united in common purpose.
4.noun(plural phalanges) One of the bones of the finger or toe.