LINE

line,n.1. A demarcation, border, or limit <the line between right and wrong>.2. A person’s occupation or business <what line of business is Watson in?>.3. In manufacturing, a series of closely related products. 4. The ancestry of a person; lineage <the Fergusons came from a long line of wheat farmers>.

collateral line.A line of descent connecting persons who are not directly related to each other as ascendants or descendants, but who are descendants of a common ancestor. [Cases: Descent and Distribution  32, 37. C.J.S. Descent and Distribution §§ 40–41, 44–49.]

direct line.A line of descent traced through only those persons who are related to each other directly as ascendants or descendants. [Cases: Descent and Distribution  25. C.J.S. Descent and

Distribution § 32.] maternal line.A person’s ancestry or relationship with another traced through the mother. paternal line.A person’s ancestry or relationship with another traced through the father.
[Blacks Law 8th]