hen's tooth

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

Common Names:

Name	Pronounced	Usage
Soma	SO-maw	Hungarian
Raquel	rah-KEL (Spanish)	Spanish, Portuguese, English
Andie	AN-dee	English
Hadriana	-	Ancient Roman
Yumiko	yoo-mee-ko	Japanese
Olive	['ɔliv]