Noun lancastrian line has 1 sense
  1. Lancaster, House of Lancaster, Lancastrian line - the English royal house that reigned from 1399 to 1461; its emblem was a red rose
    --1 is a kind of dynasty; royalty, royal family, royal line, royal house
    --1 has members:
     Lancastrian; Henry IV, Bolingbroke, Henry Bolingbroke; Henry V; Henry VI
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