A spoke is a metal rod that connects the wheel of a bicycle to the frame. The tension of the spokes holds the wheel in place and helps it rotate smoothly. Over time, however, spokes can become loose and need to be tightened. This is a relatively simple process that can be done at home with just a few tools.
First, you'll need to identify which spoke is loose. You can do this by gently pressing on each spoke with your finger. If there's any give or movement, that's the loose one.
Next, locate the nipple at the end of the loose spoke. The nipple is a small metal cap that sits atop the spoke and adjusts its tension. To tighten the nipple, use a spoke wrench or needle-nose pliers to turn it clockwise until it's snug against the spoke but not so tight that it bends it.
Finally, give the wheel a spin to make sure everything feels good before heading out on your ride!