| sack race |
a race in which each contestant has both legs confined in a sack and moves forward by jumping. |
| sacristan |
a religious official in charge of sacred objects or church property. |
| saguaro |
a very tall cactus, native to the southwestern North American deserts, that can have large upraised branches and bears edible red fruit. |
| square |
a rectangle whose four sides are of equal length. [25 definitions] |
| square measure |
any system of units for measuring areas in squares, such as square inches or square meters. |
| square sail |
a four-sided sail rigged on a yard that is horizontal to the mast and athwart the keel of a sailing vessel. |
| sucrose |
the type of sugar obtained from sugar beets and sugar cane. |