تعريف colour bar في الإنجليزية الإنجليزية القاموس.
a pattern of varying tonal density that enables visual and numeric comparisons to be made across multiple printed sheets or pages
the segregation of people of different colour or race, especially any barrier to black people participating in activities with white people
a set of laws or social customs that prevents black people from going to the same places or taking part in the same activities as white people American Equivalent: color line