1. The sport of exploring canyons by rafting, swimming, climbing, etc.
   - canyoning [Brit, Cdn]

Encyclopedia: Canyoneering

• masturbation
• masturbator
• mat
• mat up
• Mata Hari
• Matabele
• matador
• matai
• Matakam
• Matamoros
• match
• match game
• match plane
• match play
• match point
• matchable
• matchboard
• matchbook
• matchbox
• matchbush
• matched
• matched game
• matcher
• matchet
• matching