leader-n; 5 Senses

Sense Number 1: an authoritative, guiding figure

Commentary: LEADER[+role][+guide][+authoritative]

He was a famous civil rights leader.
Military leaders are divided in their assessment of the war.
Gandhi was a great spiritual leader.

WordNet 3.0 Sense Numbers: 1

Sense Number 2: holding a rank ahead of others

Commentary: LEADER[+role][+rank][+foremost]

The brown colt is currently the leader as they come into the back stretch.
Their country is the leader in citrus exports in the New World.
Who is the leader of the Tour de France after the third day?
Their firm is trying to be the leader in video game consoles.
John's Siberian is the leader of his dog pack, hitched in front of all the Malamutes.

WordNet 0.0 Sense Numbers: 1g

Sense Number 3: a terminus or end piece

Commentary: LEADER[+structure][+terminus]

The ivy plant sent out several long leaders up the stone wall.
This adhesive tape has no leader to help get it started.
The hook was carefully attached to the leader of the fishing line.

WordNet 0.0 Sense Numbers: 1

Sense Number 4: discounted merchandise for attracting customers to a store

Commentary: LEADER[+merchandise][+discounted]
NOTE: occurs in the phrase 'loss leader'

They are using small televisions as a loss leader this weekend at the big discount chain.
Mary is always drawn in to stores by their loss leaders.

WordNet 3.0 Sense Numbers: 2

Sense Number 5: printed symbols on tabulated text that help guide the eye

Commentary: LEADER[+artifact][+symbol][+printed][+formatting]
NOTE: always in the plural - LEADERS...

The report had leaders all around the title which was written all in capitals.
Dashes and dots are often arranged in series to form leaders on a printed page.

WordNet 0.0 Sense Numbers: 6