monobrownoun [ C usually singular ]
/ˈmɒn.ə.braʊ//ˈmɑː.nə.braʊ/also unibrow, /ˈjuː.nɪ.braʊ//ˈjuː.nɪ.braʊ/two eyebrows that grow together at the top of a person's nose, so that they seem to form a single eyebrow:
I interviewed Noel Gallagher - the one with the monobrow.