turndun /tûrnˈdun/ or tundun /tunˈ/

An Australian bull-roarer

• flatting
• flattings
• flattish
• flatty
• flat tyre
• flat tyres
• flatulence
• flatulences
• flatulencies
• flatulency
• flatulent
• flatulently
• flatuous
• flatus
• flatuses
• flatware
• flatwares
• flatways
• flat white
• flat whites
• flatwise
• flatworm
• flatworms
• flat-woven
• flaught