σημεῖον

Etymology
From.

Noun

 * 1) a mark, sign, token; an indication
 * 2) tomb
 * 3) sign from the gods, omen
 * 4) wonder, portent
 * 5) sign or signal to do a thing, made by flags
 * 6) standard or flag
 * 7) body of troops under one standard or flag
 * 8)  device upon a shield or ship; figurehead
 * 9) signet on ring; figure, image
 * 10) watchword, warcry
 * 11) birthmark or distinguishing feature
 * 12)  a proof
 * 13)  a sign used as a probable argument in proof of a conclusion
 * 14)  a point
 * 15)  symptom
 * 16)  a kind of skin eruption
 * 17)  shorthand symbols
 * 18) critical mark
 * 19)  mathematical point
 * 20) point of time, instant
 * 21)  unit of time
 * 1)  unit of time