hens' teeth

Something very scarce (because hens have no teeth). Typically used in phrases like "rarer than hens' teeth." I can hardly believe your brother got an A on his final exam—grades like that are rarer than hens' teeth for him!

Common Names:

Name	Pronounced	Usage
Polyhymnia	-	Greek Mythology (Latinized)
Cees	-	Dutch
Minos	-	Greek Mythology
Roni (3)	RO-nee	Finnish
Kephas	-	Biblical Greek
Alberte (2)	-	French, Danish