signalize

Verb
  1. Provide with traffic signals (synset 202301945)
    "signalize a busy intersection"
  2. Communicate silently and non-verbally by signals or signs (synset 201041202)
    "He signed his disapproval with a dismissive hand gesture"; "The diner signaled the waiters to bring the menu"
  3. Point out carefully and clearly (synset 200926583)
  4. Make conspicuous or noteworthy (synset 200924409)

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