Learner's definition of HILL
a usually rounded area of land that is higher than the land around it but that is not as high as a mountain
an area of sloping ground on a road, path, etc.
— used to refer to the U.S. Congress
a hill of beans
chiefly US, informal
something that has little or no value
— used in negative statements
over the hill
old and no longer successful, attractive, etc.