1. Curved or curving in and out
   - sinuous, wiggly 
2. Having a strongly waved margin alternately concave and convex

See also: curved, curving, smooth

• banshie
• bantam
• bantamweight
• banteng
• banter
• blockaded
• blockader
• blockading
• blockage
• blockbuster
• blocked
• blocker
• blockhead
• blockheaded
• blockhouse
• blocking
• blocking agent
• blockish
• blocky
• Bloemfontein
• blog
• blogger
• blogosphere
• Blok
• bloke