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.
1 For a more formal semi-formal event, you can wear a tuxedo-jacket, or black trousers with a satin seam. 2  You can also consider wearing a cummerbund. 3  A vest that matches your suit can also go nicely with your semi-formal attire. 4  A variety of suit fabrics work for a semi-formal suit.