yolk
UK: jəʊk | US: joʊk
n. the yellow internal part of an egg, rich in protein and fat, surrounded by the egg white.
The word "yolk" traces back to Old English geolca, derived from geolu (yellow), reflecting its distinctive color. The modern spelling "yolk" emerged in Middle English, retaining the core idea of yellowness. The "k" ending is a phonetic evolution from earlier forms. Unlike many compound words, "yolk" is monomorphic, with no separable prefixes or suffixes in its current structure. Its simplicity highlights its ancient Germanic roots as a basic descriptor of natural objects.
Separate the yolk from the egg white carefully.
The recipe calls for two egg yolks.
Yolks are high in cholesterol but also contain essential nutrients.
She prefers her omelets with runny yolks.
The yolk’s color can vary depending on the hen’s diet.