mine·field 
(mīnfēld′)
(mīnfēld′)n.
1. An area in which explosive mines have been placed.
2. A situation that has many potential hazards or dangers.
- opossum shrimp
- Oppenheimer
- opponency
- opponent
- opportune
- opportunely
- opportuneness
- opportunism
- opportunist
- opportunistic
- opportunistic infection
- opportunity
- opposability
- opposable
- oppose
- opposer
- opposite
- opposite field
- opposite-field
- oppositely
- oppositeness
- opposite number
- opposition
- oppositional
- oppositionist