The Spanish word 'tanguero' refers to someone who performs or dances tango music. It is formed by combining the word 'tango' with the suffix '-ero', which is commonly used in Spanish to create nouns indicating a profession or occupation (like 'panadero' for baker). The word 'tango' itself can be traced back to the Latin word 'tangere', meaning 'to touch' - a fitting etymology given the close physical contact characteristic of tango dancing.

Some simpler Spanish words that share this etymology include 'tocar' (to touch), which also comes from Latin 'tangere'. You might also recognize the '-ero' suffix in many common Spanish occupation words like 'cocinero' (cook), 'jardinero' (gardener), or 'mesero' (waiter).

Several English words share the Latin root 'tangere', including 'tangent' (touching at a single point), 'tangible' (able to be touched), and 'contact' (from Latin 'contactus', meaning touched together). The word 'tango' itself has been borrowed directly into English with the same meaning as in Spanish.