sill - (geology) a flat (usually horizontal) mass of igneous rock between two layers of older sedimentary rock. geology - a science that deals with the history of the earth as recorded in rocks. rock, stone - a lump or mass of hard consolidated mineral matter; he threw a rock at me. Translations.
Outfit #2- With jeans. Now it is perfectly fine to wear a tunic with a pair of skinny jeans. However, it is important to point out that if you have wide hips and thighs the size of them may be overemphasized if you wear a tunic with them, especially if that tunic ends at the widest part of your hips.
Later Greek and Roman tunics were an evolution from the very similar chiton, chitoniskos, and exomis all of which can be considered versions of the garment. In Ancient Greece, a person's tunic was decorated at the hem-line to represent the city-state in which he lived.