majority-n; 4 Senses

Sense Number 1: the largest proportion of something

Commentary: MAJORITY[+quantity][+largest]
NOTE: a general notion of largest proportion, need not be half, just more than any other allocation.
NOTE: can be a proportion of a set of things (people), or a single thing (pie)

A majority of the students accepted to that college are from the midwest.
I would say Pete ate the majority of the chocolate cake.
Among our customers, the majority care more about economizing than attaining status symbols.

WordNet 3.0 Sense Numbers: 1

Sense Number 2: the number of votes required to win an election

Commentary: MAJORITY[+quantity][+proportion][+vote][+51_percent/+predominant]
NOTE: a narrow sense of sense 1, implies legal stipulations about the votes required in a context

The Democrats may regain the majority of Senate seats in the next election.
The leading candidate didn't win a majority so there will be a runoff.
He now owns the majority of the stock in that company. (implies voting clout)
John believes the purpose of the state is to balance individual rights against majority rule.

WordNet 3.0 Sense Numbers: 2

Sense Number 3: the age at which one is legally an adult

Commentary: MAJORITY[+state][+chronological][+age][+adult]

The defendant has reached majority and so will not be tried as a minor.
Mandated child support usually ends when the children reach majority.

WordNet 3.0 Sense Numbers: 3

Sense Number 4: the military rank of major

Commentary: MAJORITY[+quality][+rank][+military][+major]

Bob achieved majority in the army before he retired.
Those captains must obey him because he has majority. (US major outranks captain in the army)

WordNet 0.0 Sense Numbers: 5