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

See also: curved, curving, smooth

• Strait of Messina
• Strait of Ormuz
• straiten
• straitjacket
• straitlaced
• straits
• Straits of Dover
• Straits of Gibraltar
• strake
• stramash
• stramonium
• strand
• strand wolf
• stranded
• strange
• strange attractor
• strange particle
• strange quark
• strangely
• strangeness
• stranger
• strangle
• strangled
• stranglehold
• strangler