a company, a thing, a person, etc. that is the best or in first place in a business, competition, etc 最佳的人（或物）；（在商业、竞争等活动中）处於领先地位的人（或公司、物）◆The company is a world leader in electrical goods. 这公司的电器产品在全世界首屈一指。◆Our new product is a leader in its field. 我们的新产品在其领域内处於领导地位。
a person who leads a group of people, especially the head of a country, an organization, etc 领导者；领袖；首领◆The changes are supported by a growing number of business leaders. 变革得到越来越多的商界领袖的支持。◆The team leader has called a meeting for 3 p.m. 小组主管已下令下午 3 点召开会议。◆Most organizations have at least one person who is a natural leader. 大多数机构里至少有一人是天生的领袖。➡ see note at boss