a very large, white seabird

burden

a heavy load

mental weight; stress

something a person must do because of morality, law, conscience etc

responsibility, assignment

a person, thing, that is a burden

burden

(a competition, race, in which there is) a disadvantage imposed on a competitor to make the chances of success more equal for all; anything likely to lessen one's chances of success

disadvantage

a person or thing that hinders

obstruction, difficulty

a physical defect, especially in speech, e.g. a stammer; something that hinders

obstruction, hindrance

responsibility for doing something

burden

a particular piece of work (to be) done

job or chore, often assigned