The Spanish verb 'chinear' comes from the Spanish noun 'chino' meaning 'servant' or 'menial work', combined with the common Spanish verb suffix '-ar'. The noun 'chino' itself comes from the Quechua word 'čína', which meant 'female servant'. This is an interesting example of how indigenous American languages have influenced Spanish vocabulary, particularly in terms related to daily life and social structures in colonial Latin America.

A simpler and more common related Spanish word is 'chino', which originally meant 'servant' but has evolved to have several different meanings in modern Spanish. In some Latin American countries, it can still carry connotations of service work or manual labor, though this usage is becoming less common.

While there aren't direct English cognates from this Quechua root, it's worth noting that this word is completely unrelated to the more familiar Spanish and English word 'chino' meaning 'Chinese' or 'Chinese person', which has a different etymology altogether.