(formerly in fresco painting) the last and finest coat of plaster, usually applied in sections and painted while still damp with colors ground in water or a lime-water mixture.
Origin: 1800–10; < It, n. deriv. of intonacare to coat, equiv. to in-in-2+ VL *tunicāre, by construal of L tunicātus “wearing a tunic” as a ptp; see tunic, -ate1
[in-ton-uh-koh, -taw-nuh-; It. een-taw-nah-kaw] 
əˌkoʊ