Definitions

1. verb

to take the responsibility or burden of something, or to begin to do something

“The new manager will undertake the task of restructuring the company.”

2. verb

to challenge or accept a challenge to a duel or other contest

“He undertook the knight to a duel, but it was eventually cancelled.”

3. noun

a challenge to a duel or other contest

“The undertaker issued an ultimatum to the challenger to meet him at dawn.”

4. noun

a person who undertakes a task or job

“The undertaker of the project was responsible for its success.”