1. people who share a bed for sleeping
Usage: plural form
2. people or groups that form an unlikely alliance or partnership
Usage: figurative; often used in politics or business

Examples

• The twins have been bedmates since they were toddlers.
• College roommates often become bedmates when sharing a small dorm room.
• The two political parties became strange bedmates on this environmental issue.
• The competing companies were unlikely bedmates in the joint venture.
• Despite their differences, the activists and politicians proved to be effective bedmates.
• The children didn’t mind being bedmates during the family camping trip.