definir
/defiˈniɾ/ · B1 · verb
to define
📖 de + finis = set the boundary; same Latin root as English define and finish
From Latin definire, de- plus finis, meaning limit or end. Defining a word means marking where its meaning stops, which is why finis also gives us final and finish. Stress falls on the last syllable: de-fi-NIR.