Related Clues:

• Potential embryo
• Zabaglione ingredient
• Reproductive seed
• Prank someone's house, maybe
• Meringue start
• It's most useful when cracked
• Cake leavener
• Incipient chick
• Macrogamete
• ''Good'' person
• Haploid cell
• Traditional White House lawn roller
• Future chick
• It may have come first
• Certain gamete