Definition: Teamspeak is a command-line communication protocol for voice-only games. It allows players to use voice commands, which they can transmit to servers over text-based channels for multiplayer game sessions. Detailed definitions include: 1. Teamspeak: A command-line interface used for gaming and communication where users type in phrases or commands and receive responses in real-time from a server. 2. Teamspeak Command: This is the phrase that represents each game session, including what players can say through voice chat during gameplay. Teamspeak is significant in multiplayer games due to its ability to reduce latency and increase player interaction with other players, allowing for more dynamic and engaging online experiences.