sos (noun) alarm: warning, signaling device
Sinonime: Mayday, SOS,
alert, bell,
blast, buzzer,
call,
caution, clock,
cry, drum, flap,
flash*, forewarning, gong, high sign, horn, nod,
scramble*,
scream,
shout,
sign,
signal,
siren, squeal,
tip, tip off, tocsin, trumpet,
warning, whistle, wink,
yell