Function: verb
Inflected Form: sig · naled or sig · nalled ; sig · nal · ing or sig · nal · ling \ -n ə -li ŋ \
Date: 1805
transitive verb
1 : to notify by a signal < signal the fleet to turn back>
2 a : to communicate or indicate by or as if by signals < signal ed the end of an era> b : to constitute a characteristic feature of (a meaningful linguistic form)
intransitive verb : to make or send a signal
– sig · nal · er or sig · nal · ler noun