Verb
1. cause to start burning; subject to fire or great heat;
"Great heat can ignite almost any dry matter""Light a cigarette"2. start to burn or burst into flames;
"Marsh gases ignited suddenly""The oily rags combusted spontaneously"3. arouse or excite feelings and passions;
"The ostentatious way of living of the rich ignites the hatred of the poor""The refugees' fate stirred up compassion around the world""Wake old feelings of hatred"