- The definition of a dhobi is a person who washes clothes in India.
An example of dhobi is the person to whom you'd bring your dirty clothes to be washed while traveling in India.
A dhobi with an arm full of laundry.
Origin of dhobiHindi ; from dhob, washing; akin to Sanskrit dhvati, (he) cleans, dhavala, shining white ; from Indo-European base an unverified form dheu-, gleaming
Origin of dhobiHindi dhobī, washerman, from dhob, a wash, washing, from Middle Indic dhovva&idie;, is washed, from earlier *dhauvati, he washes, alteration (influenced by Sanskrit dhauta-, washed) of Sanskrit dhāvati, he washes.
- A laundryman in India and Pakistan; a washerman.
- “A dhobi is a washerman in India and Pakistan. Dhobis usually run door to door collecting ... All the dhobis wash their linen in the Mahalaxmi area known as Dhobi Ghat.” 
- The 'dhobi khana' at Fort Kochi was once throbbing with activity. ... "The first dhobi khana was under the Madras Presidency...” 
From Hindi धोबी (dhōbī, “washerman”)