Definition of "tailgating" in English

verb

1. present participle and gerund of tailgate

noun

1. The act of driving dangerously close behind another vehicle.

2. A tailgate party (social event held on and around the open tailgate of a vehicle)

3. Inappropriately gaining entry into a restricted area, past a checkpoint, by tagging along behind another person who is authorized.

4. (finance) Synonym of front running.