1nail 
/ˈneɪl/ noun
plural nails /ˈneɪl/ noun [count] 1 : a long, thin piece of metal that is sharp at one end and flat at the other end and that is used chiefly to attach things to wood
▪ a hammer and some nails — see picture at carpentry; compare 1screw 1 2 : the hard covering at the end of a finger or toe : a fingernail or toenail
▪ I get my nails done at the beauty salon every other week. ▪ a pair of nail clippers — see also hangnail
▪ a hammer and some nails — see picture at carpentry; compare 1screw 1
▪ I get my nails done at the beauty salon every other week. ▪ a pair of nail clippers — see also hangnail
a nail in the/someone's coffin
: something that makes it more likely that someone or something will fail, be destroyed, etc.
▪ Every mistake is one more nail in the coffin of his professional baseball career. ▪ The lawyers put another nail in her coffin today.
▪ Every mistake is one more nail in the coffin of his professional baseball career. ▪ The lawyers put another nail in her coffin today.
(as) hard/tough as nails
of a person : very tough
▪ When she's negotiating a contract, she can be as tough as nails.
▪ When she's negotiating a contract, she can be as tough as nails.
hit the nail on the head — see 1hit
tooth and nail — see tooth
