#line_corner__corner  the point where two lines meet or intersect; "the corners of a rectangle"
  supertype:  point  the precise location of something; a spatially limited location; "she walked to a point where she could survey the whole street"
  subtype:  canthus  either of the corners of the eye where the upper and lower eyelids meet
     subtype:  nasal_canthus__nasalcanthu  the inner corner of the eye
     subtype:  temporal_canthus  the outer corner of the eye

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