cha·la·za /kəˈlezə, ˈlæ-/
  系帶
  cha·la·za /kəˈlezə, ˈlæzə/ 名詞
  卵(黃系)帶,毛突(昆蟲),合點(植物)
  Cha·la·za n.; pl. E. Chalazas, L. Chalazæ
  1. Bot. The place on an ovule, or seed, where its outer coats cohere with each other and the nucleus.
  2. Biol. A spiral band of thickened albuminous substance which exists in the white of the bird's egg, and serves to maintain the yolk in its position; the treadle.
  ◄ ►
  chalaza
       n 1: basal part of a plant ovule opposite the micropyle; where
            integument and nucellus are joined
       2: one of two spiral bands of tissue connecting the egg yolk to
          the enclosing membrane at either end of the shell
       [also: chalazae (pl)]