noun🔗ShareFrein, freinageA small fold of tissue that prevents an organ in the body from moving too far."Humans have three oral frenulums: beneath the tongue, between the upper lip and gum, and between the lower lip and gum."Les humains ont trois freins oraux : sous la langue, entre la lèvre supérieure et la gencive, et entre la lèvre inférieure et la gencive.anatomybodymedicineorganphysiologyChat with AIVocabulary GamePractice Reading