Pyramidion

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Pyramidion \Pyr`a*mid"i*on\, n.; pl. {Pyramidia}. [NL., from L.
     pyramis. See {Pyramid}.]
     The small pyramid which crowns or completes an obelisk.
     [1913 Webster]