Something like a bonfire (sense 1 or 2) in heat, destructiveness, ferocity, etc.
A large, controlled outdoor fire lit to celebrate something or as a signal.
A fire lit outdoors to burn unwanted items; originally (historical), heretics or other offenders, or banned books; now, generally agricultural or garden waste, or rubbish.
To destroy (something) by, or as if by, burning on a bonfire; (more generally) to burn or set alight.
To fire (pottery) using a bonfire.
To make, or celebrate around, a bonfire.
An indication that a potentially bad or dangerous situation could develop.
A signal set at danger and showing a red light or other stop indication, which a train driver must not pass until it changes or until manually cleared past the signal by a dispatcher.