Rolls-Royce® /rōlz-roisˈ/

1. A superior make of car, produced by Rolls-Royce Ltd (also informal Rolls or Rollˈer)
2. Anything thought of as being of superior quality (figurative; also adjective)

• busying
• busy Lizzie
• busyness
• busynesses
• busy signal
• busy signals
• busywork
• busyworks
• but
• butadiene
• butadienes
• but and
• but and ben
• butane
• butanedicarboxylic acid
• butanedioic acid
• butanes
• butanoic acid
• butanol
• butanols
• Butazolidin
• butch
• butcher
• butcherbird
• butcherbirds