(n) brown sugar
(n) brown trout (Salmo trutta, esp. Salmo trutta fario)
(n) bloodhound
(n) Blue Mountain (coffee)
(n) home ground
(P)
(n) mountain gorilla
(n) mountain bicycle
mountain bike
(n) (comp) mounting rail
(n) (comp) mount point
(n) (comp) user account
(n) round steak
(n) round table
(n) (comp) round trip
(n) round number
(n) wrap-around (i.e. sunglasses)
(n) (comp) remote mount
(n) out of bounds
(n) accountability
(n) (comp) account domain
(n) (comp) account policy
(n) academic gown
(n) (comp) access counter
Web counter
(n) underground
(n) Uruguay round
(n) ununoctium (Uuo)
(n) ununquadium (Uuq)
(n) Ununseptium (Uus)
(n) ununhexium (Uuh)
(n) ununpentium (Uup)
(n) open account