signe

from the Latin signum ("mark, sign, imprint, seal, stamp, see sigillum, sign of recognition, indication, proof, sign, omen, premonition, symptom, gesture, military signal, rallying sign, password, order, sign, standard, flag, statue, zodiac sign, constellation") derived from the Indo-European root *sekw- ("to follow") which is also found in Latin in secundus ("second"), socius ("companion, ally"), and sequor ("to follow").