noun🔗ShareStreckmuskelA muscle whose contraction extends or straightens a limb or body part."The doctor checked the extensor muscle in my arm by asking me to straighten my elbow against his resistance. "Der Arzt untersuchte den Streckmuskel in meinem Arm, indem er mich bat, meinen Ellbogen gegen seinen Widerstand zu strecken.anatomymedicinephysiologybodyorganChat with AIVocabulary GamePractice Reading