mos·tac·cio·li \ˌmȯstätˈchōlē\noun (-s) Etymology: Italian, plural of mostacciolo rhombus, rhomboidal confection flavored with must and raisins, diminutive of (assumed) mostaccio, from Latin mustaceus cake made with must, from mustum must — more at must : a pasta in the form of a short tube with oblique ends