| sinuous |
with many curves or turns; winding. [3 definitions] |
| sinus |
any of various bodily cavities, recesses, or channels, esp. those in the skull bone that connect with the nasal cavities. [2 definitions] |
| Sioux |
a member of a group of American Indian peoples of the northern plains of the United States and of southern Canada, esp. the Dakota. [2 definitions] |
| sip |
to drink slowly and a little at a time. [3 definitions] |
| siphon |
a tube or pipe used to suck a liquid over the top of its container and into a lower one by means of air pressure. [3 definitions] |
| sir |
(often cap.) a respectful form of address for a man, usu. used in place of his name. [3 definitions] |
| siren |
(often cap.) in Greek mythology and The Odyssey, one of a group of sea nymphs who lure sailors to death on rocky coasts by their seductive singing. [6 definitions] |
| Sirius |
a white binary star in the constellation Canis Major, the brightest star in the sky with a combined magnitude of -1.4; Dog Star. |
| sissy |
(informal) an effeminate man or boy. [2 definitions] |
| sister |
a female having the same parents as another person. [4 definitions] |
| sisterhood |
the state of being a sister. [4 definitions] |
| sister-in-law |
the sister of one's spouse. [3 definitions] |
| sit |
to position oneself so that one is resting on the buttocks and thighs, or to be in such a position. [8 definitions] |
| site |
the location or proposed location of a town, city, building, or the like. [4 definitions] |
| sit tight |
to refrain from taking any action until there are further instructions or news. |
| situation |
state of affairs; circumstances. [4 definitions] |
| sit-up |
an exercise for the stomach muscles, in which one lies flat on one's back and then sits up without bending the legs and without support from the arms. |
| six |
the number represented by the Arabic numeral 6 and by the Roman numeral VI. [3 definitions] |
| sixteen |
the number represented by the Arabic numeral 16 and by the Roman numeral XVI. [3 definitions] |
| sixteenth |
indicating rank or position between fifteenth and seventeenth. [3 definitions] |
| sixth |
indicating rank or position between fifth and seventh. [4 definitions] |