martlet /märtˈlit/

1. The martin
2. A representation of a martin or swallow without feet, used as a bearing, a crest, or a mark of cadency for a fourth son (heraldry)

• free agency
• free agent
• free agents
• free alongside ship
• free and easy
• free-and-easy
• free-arm
• free association
• free atom
• free atoms
• freebase
• freebased
• freebases
• freebasing
• freebee
• freebees
• free-bench
• free-benches
• freebie
• freebies
• freeboard
• freeboards
• homomorphisms
• homomorphoses
• homomorphosis