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• n  a small circular opening between the stomach and the duodenum

• More often, the corrosive juices empty through the pylorus into the duodenum, the second chamber in man's digestive tract, and start eating through part of that.
• Her tenseness, he said, closes the pylorus (the gate valve at the lower end of the stomach) and keeps the alcohol in.
• The stomach churns this chyme, pumps it through a valve called the pylorus (gatekeeper) into the duodenum.