humdinger /hum-dingˈər/ (slang)

1. An exceptionally excellent person or thing
2. A smooth-running engine
3. A swift vehicle or aircraft

• gallows-lees
• gallows-maker
• gallows-makers
• gallowsness
• gallowsnesses
• gallows-ripe
• gallows-tree
• gallows-trees
• galls
• gall-sickness
• gallsickness
• gallsicknesses
• gallstone
• gallstones
• gallumph
• gallumphed
• gallumphing
• gallumphs
• Gallup poll
• gallus
• galluses
• gallusness
• gall wasp
• gall wasps
• gally