The Collaborative International Dictionary of English v.0.48:

Lineage \Lin"e*age\ (l[i^]n"[-e]*[asl]j; 48), n. [OE. linage, F.
   lignage, fr. L. linea line. See 3d Line.]
   Descent in a line from a common progenitor; progeny; race;
   descending line of offspring or ascending line of parentage.
   [1913 Webster]

         Both the lineage and the certain sire
         From which I sprung, from me are hidden yet. --Spenser.
   [1913 Webster]

WordNet (r) 3.0 (2006):

lineage
    n 1: the descendants of one individual; "his entire lineage has
         been warriors" [syn: lineage, line, line of descent,
         descent, bloodline, blood line, blood, pedigree,
         ancestry, origin, parentage, stemma, stock]
    2: the kinship relation between an individual and the
       individual's progenitors [syn: descent, line of descent,
       lineage, filiation]
    3: the number of lines in a piece of printed material [syn:
       linage, lineage]
    4: a rate of payment for written material that is measured
       according to the number of lines submitted [syn: linage,
       lineage]
    5: inherited properties shared with others of your bloodline
       [syn: ancestry, lineage, derivation, filiation]