1. the act or process of entering a username and password to access a computer system or online account
Usage: computing; common in digital contexts
2. a username or account credential used to access a system
Usage: computing; often used in plural

1. to enter a username and password to gain access to a computer system or online account
Usage: computing; transitive or intransitive

Examples

• I forgot my login password and had to reset it.
• Please login to your email account to verify your identity.
• The website requires a login before you can access your files.
• She logged in to the system using her employee credentials.
• Multiple failed login attempts will lock your account.
• You can login with either your username or email address.
• The login page appears when you first open the application.