The Spanish word 'ojito' means 'little eye' and is formed by combining two elements: the noun 'ojo' (meaning 'eye') and the diminutive suffix '-ito'. The base word 'ojo' comes from Latin 'oculus', meaning 'eye'. The diminutive suffix '-ito' is a very common Spanish suffix used to indicate smallness or endearment.

The most obvious related Spanish word is 'ojo' meaning 'eye', which is the base word from which 'ojito' is derived. 'Ojo' is a very common Spanish word that appears in many expressions, such as '¡ojo!' (watch out!) and 'mal de ojo' (evil eye).

Several English words are related to 'ojito' through the Latin root 'oculus'. These include 'ocular' (relating to the eye), 'oculist' (an eye doctor), and 'binocular' (using both eyes). The scientific term 'oculus' is still used in English to refer to an eye-like marking or structure.