noun
: a thin shell of flame surrounding a core of unburned gas that is produced by using a small amount of primary air in the mixture and is used as a free flame (as in an oven)
noun
: a thin shell of flame surrounding a core of unburned gas that is produced by using a small amount of primary air in the mixture and is used as a free flame (as in an oven)
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012