allumer (note also colloq. of mad or tipsy)

allumer /alyme/ (conjugate⇒)

1. transitive verb
   1. to light [candle, gas];
      to start [fire];
   2. to switch [sth] on, to turn [sth] on;
      laisser ses phares allumés to leave one's headlights on.

2. s'allumer reflexive verb (+ v être)
   1. [heating, radio, lighting] to come on;
   2. son regard s'alluma his face lit up.

Pocket Oxford-Hachette French Dictionary © 2005 Oxford University Press:

allumé, ~e /alyme/ adjective (familiar)

1. mad (colloquial);

2. tipsy (colloquial).