signal
nounDefinition of signal
(Entry 1 of 3)
1
: sign, indication
2a
: an act, event, or watchword that has been agreed on as the occasion of concerted action
b
: something that incites to action
3
: something (such as a sound, gesture, or object) that conveys notice or warning
4a
: an object used to transmit or convey information beyond the range of human voice
b
: the sound or image conveyed in telegraphy, telephony, radio, radar, or television
c
: a detectable physical quantity or impulse (such as a voltage, current, or magnetic field strength) by which messages or information can be transmitted
signal
verbDefinition of signal (Entry 2 of 3)
1
: to notify by a signal
signal the fleet to turn back
2a
: to communicate or indicate by or as if by signals
signaled the end of an era
b
: to constitute a characteristic feature of (a meaningful linguistic form)
: to make or send a signal
signal
adjectiveDefinition of signal (Entry 3 of 3)
: distinguished from the ordinary : notable
a signal achievement
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