doohickey /dooˈhiki/ (US informal)

A gadget, esp one whose name escapes one

• tankers
• tank farm
• tank-farmer
• tank-farmers
• tank-farming
• tank farms
• tankful
• tankfuls
• tank furnace
• tank furnaces
• tankia
• tankies
• tanking
• tankings
• tankini
• tankinis
• tankless
• tanks
• tank top
• tank tops
• tank trap
• tank traps
• tank wagon
• tanky
• tanling