xanthorrhoeaceae: one of many subfamilies into which some classification systems subdivide the Liliaceae but not widely accepted
liliid monocot family: family of monocotyledonous plants of the subclass Liliidae; mostly herbs usually with petaloid sepals and petals and compound pistils
pinning: a mutual promise of a couple not to date anyone else; on college campuses it was once signaled by the giving of a fraternity pin