humdinger /hum-dingˈər/ (slang)

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

• blackmailed
• blackmailer
• blackmailers
• blackmailing
• blackmails
• blackmail selling
• black Maria
• black Marias
• black mark
• black market
• black-marketeer
• black-marketeers
• black markets
• black marks
• black mass
• black masses
• black Monday
• black money
• Black Monk
• Black Muslim
• black mustard
• black nationalism
• black nationalist
• black nationalists
• black-necked screamer