1. a situation in which no progress can be made because opposing parties cannot reach an agreement
2. a type of lock that can only be opened with a key

1. to bring to a complete standstill; to cause a deadlock

Examples

• The budget negotiations reached a deadlock after hours of discussion.
• Union and management talks ended in deadlock over wage increases.
• She installed a deadlock on her front door for extra security.
• The heavy deadlock required two turns of the key to open.
• Political disagreements deadlocked the committee’s decision-making process.
• Traffic was deadlocked for miles due to the accident.
• The jury was deadlocked and could not reach a verdict.