Phalanx

Noun

1. 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. A Fourierite utopian community; a phalanstery.
3. A large group of people, animals or things, compact or closely massed, or tightly knit and united in common purpose.
4. One of the bones of the finger or toe.
5. A bundle of stamens, in diadelphous and polyadelphous flowers.