hilo
/ˈilo/ · B1 · noun · m
thread
🧵🧶 Latin filum: Spanish turned f into a silent h, as in filament
Spanish often changed Latin f- into h-: filum became hilo, just as facere became hacer. The h is silent, so it sounds like EE-lo. Filament, file (a line of people) and fillet all share this thread root.