ventilador
/bentilaˈdoɾ/ · B2 · noun · m
fan
🌀 ventilador = Spanish viento (wind) + -dor (maker): a wind maker
Ventilador comes from Latin ventilare, 'to fan, toss in the air', from ventus, 'wind'. The suffix -dor marks a doer or device, like English -er. So ventilador is literally a wind-maker, and it looks a lot like English ventilate and ventilator.