Exceedingly rare infant

• One of Nadya Suleman's kids, e.g
• Extra-special delivery?
• One with the same birthday as seven siblings
• Any of Apu's children, on "The Simpsons"
• Certain baby
• Group arriving together in hotel put cost up
• Rare birth occurrence
• One in eight finished lease after month

Wiktionary Word definitions in Wiktionary
n. one of a group of eight babies born from the same mother during the same birth.