Longman Dictionary of Contemporary English homepage

pledge

2 verb
     
Related topics: College
pledge2 [transitive]
1

promise

to make a formal, usually public, promise that you will do something
pledge something to something/somebody
Moore pledged $100,000 to the orchestra at the fund-raising dinner.
pledge to do something
The new governor pledged to reduce crime.
pledge that
Herrera pledged that his company will give aid to schools.
pledge yourself to (do) something
Trade unions pledged themselves to resist the government plans.
2

make somebody promise

to make someone formally promise something:
Employees were pledged to secrecy.
3

leave something

to leave something with someone as a pledge1 (3)
4SEC

us colleges

to promise to become a member of a fraternity or sorority at an American university

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