be (as) hard as nails

To be physically or mentally tough. I'm scared of those bikers—they all look like they're hard as nails! Our aunt is as hard as nails, so we asked her to give the eulogy, knowing that she's the only one who could do it without crying.

Common Names:

Name	Pronounced	Usage
Pisti	-	Hungarian
Arnulf	-	German, Ancient Germanic
Dionysos	dee-o-nuy-sos (Ancient Greek)	Greek Mythology
Chinwendu	-	Western African, Igbo
Ceridwen	ke-RID-wen	Welsh
PÍO	PEE-o	Spanish