D defs.my
Entry 2 senses Webster, 1913

Chalaza

· Cha·la·za · IPA /kəˈleɪzə/
01 n. The place on an ovule, or seed, where its outer coats cohere with each other and the nucleus.
pl. Chalazas, Chalazæ ((#))
  1. 1.
    The place on an ovule, or seed, where its outer coats cohere with each other and the nucleus.(Bot.)
  2. 2.
    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.(Biol.)