An extendable and prehensile mechanical component of a whole robot that holds their manipulators (hands or pincers). Robot arms comes in many forms from jointed arms, telescoping hydraulic arms, to segmented tube arms. The arm can also be equipped with tools, weapons (turning it into a gun_arm, an arm_cannon or a blade_arm), and other equipment in place of the manipulators. This enables the robot interact with the environment to accomplish various manual tasks.

Not to be confused with

• robotic_arm - A stand-alone machine that is used in factories, laboratories, and construction work.
• cybernetic_arm - robotic prosthetic arms used by cyborgs.