tunicle

• They are worn ... by the deacon and subdeacon, instead of dalmatic and tunicle, on days of fasting and penance, except vigils of Saints 'days and Christmas Eve, which have dalmatic and tunicle. —  New Liturgical Movement
• But in the calendar of the usus antiquior, violet dalmatic and tunicle would have also been used for times such as the pre-Lenten season of Septuagesima. —  New Liturgical Movement
• Further, according to Fortescue, if there were no Rose coloured vestments to use on Gaudete and Laetare Sundays, violet vestments were used on those Sundays instead, including the violet dalmatic and tunicle (p. 245) -- which would be in keeping with the lightened penitential character of those Sundays. —  New Liturgical Movement
• As for black, this takes little explanation, and is not usually a cause for question, but for the sake of completeness: black dalmatic and tunicle were of course mainly used for solemn Masses for the Dead (i.e. Requiems and All Souls Day), with black planetae plicatae (folded chasubles) and broad stole being used upon Good Friday in the Roman —  New Liturgical Movement
• Both Braun and Fortescue speak of the deacon and subdeacon simply wearing their proper vestments, minus the dalmatic and tunicle respectively in these instances. —  New Liturgical Movement

Allen's Synonyms and Antonyms