Dictionary definition · leading
noun
- the activity of leading"his leadership inspired the team"
- thin strip of metal used to separate lines of type in printing
adjective
- indicating the most important performer or role"the leading man"
- greatest in importance or degree or significance or achievement"the country's leading poet"
- going or proceeding or going in advance; showing the way"we rode in the leading car"
- having the leading position or higher score in a contest"he is ahead by a pawn"
Source: Open English WordNet (CC BY 4.0).