The part of your arm between your elbow and your wrist, or to prepare yourself beforehand for something difficult.
From Old English 'forearm' combining 'fore' (before/front) and 'arm' (the limb). It literally means the arm in front, the part closer to your hand.
Your forearm contains two bones—the radius and ulna—that let you twist your wrist and hand in ways many other animals can't, which is why humans are so good at throwing and grasping!
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