[ jəʊk ]
■ noun the yellow internal part of a bird's egg, which is rich in protein and fat and nourishes the developing embryo.
↘ Zoology the corresponding part in the ovum or larva of all egg-laying vertebrates and many invertebrates.
Derivatives
~ed adjective
~less adjective
~y adjective
Origin
OE geol(o)ca , from geolu 'yellow'.