[syn: aboriginal, primal, primeval, primaeval, primordial]
The Collaborative International Dictionary of English v.0.48:
Aboriginal \Ab`o*rig"i*nal\, a. [See Aborigines.]
   1. First; original; indigenous; primitive; native; as, the
      aboriginal tribes of America. "Mantled o'er with
      aboriginal turf." --Wordsworth.
      [1913 Webster]
   2. Of or pertaining to aborigines; as, a Hindu of aboriginal
      blood.
      [1913 Webster]
The Collaborative International Dictionary of English v.0.48:
Aboriginal \Ab`o*rig"i*nal\, n.
   1. An original inhabitant of any land; one of the aborigines.
      [1913 Webster]
   2. An animal or a plant native to the region.
      [1913 Webster]
            It may well be doubted whether this frog is an
            aboriginal of these islands.          --Darwin.
      [1913 Webster]
WordNet (r) 3.0 (2006):
Aboriginal
    adj 1: of or pertaining to members of the indigenous people of
           Australia; "an Aboriginal rite"
    2: characteristic of or relating to people inhabiting a region
       from the beginning; "native Americans"; "the aboriginal
       peoples of Australia" [syn: native, aboriginal] [ant:
       nonnative]
    3: having existed from the beginning; in an earliest or original
       stage or state; "aboriginal forests"; "primal eras before the
       appearance of life on earth"; "the forest primeval";
       "primordial matter"; "primordial forms of life" [syn:
       aboriginal, primal, primeval, primaeval,
       primordial]
    n 1: a dark-skinned member of a race of people living in
         Australia when Europeans arrived [syn: Aborigine, Abo,
         Aboriginal, native Australian, Australian Aborigine]
    2: an indigenous person who was born in a particular place; "the
       art of the natives of the northwest coast"; "the Canadian
       government scrapped plans to tax the grants to aboriginal
       college students" [syn: native, indigen, indigene,
       aborigine, aboriginal]
Moby Thesaurus II by Grady Ward, 1.0:
86 Moby Thesaurus words for "aboriginal":
   abecedarian, aborigine, ancestral, antenatal, antepatriarchal,
   atavistic, autochthon, autochthonous, barbarian, barbaric,
   barbarous, basal, basic, beginning, budding, central, creative,
   crucial, elemental, elementary, embryonic, endemic, fetal,
   formative, foundational, fundamental, generative, genetic,
   germinal, gestatory, homebred, homegrown, humanoid, in embryo,
   in its infancy, in ovo, in the bud, inaugural, inceptive, inchoate,
   inchoative, incipient, incunabular, indigene, indigenous, infant,
   infantile, initial, initiative, initiatory, introductory,
   inventive, nascent, natal, native, native-born, original,
   parturient, patriarchal, postnatal, preadamite, preglacial,
   pregnant, prehistoric, prehuman, prenatal, primal, primary, prime,
   primeval, primitive, primogenial, primoprimitive, primordial,
   pristine, procreative, protogenic, protohistoric, protohuman,
   radical, rudimental, rudimentary, savage, seminal, ur,
   vernacular