Meaning of “burden” - Learner’s Dictionary

burden

noun [ C ] uk us /ˈbɜːdən/

something difficult or unpleasant that you have to deal with or worry about:

the burden of responsibility
I'd hate to be a burden to you when I'm older.
burden verb [ T ]

to give someone something difficult or unpleasant to deal with or worry about:

Sorry to burden you with my problems.

(Definition of “burden” from the Cambridge Learner’s Dictionary © Cambridge University Press)