play face
noun
An expression seen in apes or monkeys at play, in which the mouth is open but the teeth are hidden.
Origin
1960s.
- ground beef
- ground beetle
- groundbreaker
- groundbreaking
- ground cherry
- ground clearance
- ground cloth
- groundcloth
- ground clutter
- ground control
- ground controller
- ground cover
- ground crew
- ground dove
- ground down
- ground effect
- ground elder
- grounder
- ground floor
- ground forces
- ground frost
- ground game
- ground glass
- groundhog
- Groundhog Day