Definition of yolker in English:

yolker

noun

US
  • With modifying word. An egg with a specified number of yolks, as "double-yolker", "one-yolker", "triple-yolker", etc.

Origin

Mid 19th century; earliest use found in Milwaukee Daily Sentinel. From yolk + -er.

Pronunciation

yolker

/ˈjəʊkə/