Bunsen burner

n gas burner used in chemical laboratories, consisting of a vertical tube with an adjustable air valve 本生灯.

bumpkin, bumptious, bumptiously, bumptiousness, bumpy, bun, bun-fight, bunch, bundle, bung, bung-hole, bungalow, bungle, bungler, bungling, bunion, bunk, bunker, bunkum, bunny, bunting, buoy, buoyancy, buoyant, buoyantly, bur (also burr), burble, burden, burdensome, bureau, bureaucracy, bureaucrat, bureaucratic, bureaucratically, burette, burgeon, burger, burgh, burgher, burglar,