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Clothes peg, a fastener used to hang up clothes for drying •
Tent peg, a spike driven into the ground for holding a tent to the ground •
Tuning peg, used to hold a string in the pegbox of a stringed instrument •
Piton, a metal spike that is driven into rock to aid climbing •
PEG tube, a medical device, that is, a percutaneous endoscopic gastrostomy tube • Foot peg, a place to put one's foot on a vehicle such as a
motorcycle == Science and computing ==