Meker burner

noun

Mek·​er burn·​er ˈmek-ər-ˌbər-nər 

: a laboratory gas burner that differs from a typical Bunsen burner in having a constriction in the tube and a grid at the top of the burner causing the flame of burning gas to consist of a number of short blue inner cones and a large single outer cone and to be hotter generally than the flame of a Bunsen burner