From WordNet (r) 3.0 (2006) :
signalise
v 1: provide with traffic signals; "signalize a busy
intersection" [syn: signalize, signalise]
2: communicate silently and non-verbally by signals or signs;
"He signed his disapproval with a dismissive hand gesture";
"The diner signaled the waiters to bring the menu" [syn:
sign, signal, signalize, signalise]
3: point out carefully and clearly [syn: signalize,
signalise, point out, call attention]
4: make conspicuous or noteworthy [syn: signalize,
signalise, distinguish]