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  2  definitions  found 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
  Pineal  \Pi"ne*al\,  a.  [L.  pinea  the  cone  of  a  pine,  from  pineus 
  of  the  pine,  from  pinus  a  pine:  cf  F.  pin['e]ale.] 
  Of  or  pertaining  to  a  pine  cone;  resembling  a  pine  cone. 
  {Pineal  gland}  (Anat.),  a  glandlike  body  in  the  roof  of  the 
  third  ventricle  of  the  vertebrate  brain;  --  called  also 
  {pineal  body},  {epiphysis},  {conarium}.  In  some  animals  it 
  is  connected  with  a  rudimentary  eye,  the  so-called  pineal 
  eye,  and  in  other  animals  it  is  supposed  to  be  the  remnant 
  of  a  dorsal  median  eye. 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
  Conarium  \Co*na"ri*um\,  n.  [NL.,  fr  Gr  kwna`rion.]  (Anat.) 
  The  pineal  gland.