Private Key, ECDSA Private Key
This definition comes from the technical glossary.
Definition
The private portion of a keypair which can create signatures that other people can verify using the public key.
Synonyms
- Private key
Not To Be Confused With
- 
    Public key (data derived from the private key) 
- 
    Parent key (a key used to create child keys, not necessarily a private key) 
Links
- 
    Private key — Developer Guide 
- 
    Private key — Bitcoin Wiki 
- 
    What is a private key? — Bitcoin StackExchange