ˈ ̷ ̷ˌ ̷ ̷ ̷ ̷ noun
( -s )
Usage: often attributive
Etymology: flash (I) + over
1. : an electrical discharge or arc through the air to the ground from a high potential source or between two conducting portions of a machine or structure
2. : the sudden spread of flame over an area when it becomes heated to the flash point