Usually, the word 'bloodlines' is used for animals. Dictionary definition of lineage . 1. a. Direct descent from a particular ancestor; ancestry. b. Derivation. 2. The descendants of a common ancestor considered to be the founder of the line. For example, I am an Australian Lithuanian.( My parents were born in Lithuania, but I was born in Australia) His/her father is Japanese and the mother is American ( double nationality maybe)= He/she is an American Japanese. OR He/she is of American and Japanese parentage. His/her lineage is that his/her grandfather/great grandfather was Italian but he/she was born in Australia= He/she is an Australian of Italian descent.