অর্থ : In a straight unbroken line of descent from parent to child.
							উদাহরণ : 
							Lineal ancestors.
							Lineal heirs.
							A direct descendant of the king.
							Direct heredity.
							
সমার্থক : direct
Descended from a common ancestor but through different lines.
Cousins are collateral relatives.অর্থ : Arranged in a line.