Pinard horn is a medical instrument that is commonly used to listen to the fetal heartbeat. There are several synonyms for the term "pinard horn," including "fetal stethoscope," "Pinard stethoscope," "Pinard trumpet," "Pinard fetoscope," and "obstetrical stethoscope." These instruments are designed to amplify the sounds coming from the fetus's heart, allowing the healthcare provider to monitor the health and development of the baby. Different designs of pinard horns are available, with some featuring a trumpet-like shape and others having a longer, curved tube. Overall, pinard horns and their synonyms are essential tools used in obstetrics and gynecology for monitoring fetal health during pregnancy.