To speak; to say; to make a sound; to ring (as a telephone); to be playing (as a radio or tape recorder).
The mag--RED when preceeded by the negative "daa" (don't) signals a stern warning not to ever say s.t.
If you didn't steal something, why didn't you say so?
This radio doesn't make a sound.
That phone is ringing. Answer/Get (lit. receive) it.