burr² or bur /bûr/

1. The rough sound of r pronounced in the throat, as by many Northumberland people
2. A continual humming sound as of a machine

1. To speak with a burr
2. To whisper hoarsely, to murmur

• water breaks
• water-breather
• water-breathers
• water-breathing
• water brose
• waterbuck
• waterbucks
• water buffalo
• water buffaloes
• water bug
• water bugs
• water bull
• water bulls
• water bus
• water buses
• water busses
• water butt
• water butts
• water cannon
• water cannons
• water-carriage
• water-carriages
• Water Carrier
• water cart
• water carts