Related Clues:

• Cry from beyond a closed door
• Become involved with
• 'Come in'
• Letters above a tilde
• Computer key with an arrow on it
• Decide to compete
• Shift-key neighbor
• Tall key on a keypad, often
• Inviting door sign
• Put in data
• Key at the ready when viewing NSFW content, maybe
• Key above Shift
• Upper-left keyboard key
• Exit-the-program key
• Carriage return, these days