the side or slope of a hill
"The farmer planted vines along the steep hillside to catch more sunlight for the grapes."
The side of a hill.
"We planted wildflowers along the steep hillside to prevent erosion after the heavy rains."
A suburb of Southport, Metropolitan Borough of Sefton, Merseyside, England (OS grid ref SD3214).
"Residents in Hillside often commute to the nearby docks in Southport for work."