/ ˌʌndəˈteɪkɪŋ; NAmE -dərˈt-/ noun
1.
[ C ] a task or project, especially one that is important and/or difficult
SYN venture :
He is interested in buying the club as a commercial undertaking.
In those days, the trip across country was a dangerous undertaking.
2.
[ C ] undertaking (to do sth) | undertaking (that ... ) ( formal ) an agreement or a promise to do sth :
a government undertaking to spend more on education
The landlord gave a written undertaking that the repairs would be carried out.
3.
/ ˈʌndəteɪkɪŋ; NAmE -dərt-/ [ U ] the business of an undertaker