In typography, leading (pronounced /?l?d??/, rhymes with heading) refers to the amount of added vertical spacing between lines of type. In consumer-oriented word processing ...
http://en.wikipedia.org/wiki/Leading

In common law systems that rely on testimony by witnesses, a leading question is a question that suggests the answer or contains the information the examiner is looking for.
http://en.wikipedia.org/wiki/Leading_question

adjective . 1. chief; principal; most important; foremost: a leading toy manufacturer.
http://dictionary.reference.com/browse/Leading

A global communications company providing its customers with advanced technologies and solutions that change the way industries do business. Leading Edge offers every advantage ...
http://www.leadingedge.com/

Welcome to Leading Solutions, we are Hewlett-Packard's largest Business Partner in Australia, providing the entire range of HP products along with complementary products from ...
http://www.leading.com.au/