| skin diving |
swimming in which the swimmer uses flippers, a face mask, and an air tank to swim underwater quickly and easily. |
| skinny |
very thin and bony. |
| skip |
to jump forward lightly by sliding and hopping on one foot and then the other. [8 definitions] |
| skirt |
a piece of clothing that hangs from the waist and is worn by a woman or girl. [4 definitions] |
| skit |
a short, usually funny play. [2 definitions] |
| skittish |
easily startled or excited. |
| skull |
the bony framework of the head and face that protects the brain. |
| skull and crossbones |
a simple image that looks like a human skull with two long bones crossed beneath it. A skull and crossbones image was used on the flags of pirate ships at one time and now is used as a warning symbol, especially on things that contain poison. |
| skunk |
a small mammal with black and white fur and a bushy tail. Skunks defend themselves with a spray that smells very bad. They are active at night, when they hunt rodents, insects, and eggs. Several kinds of skunks live in North and South America. They are related to badgers, otters, and other kinds of weasels. [2 definitions] |
| sky |
the air or space above the earth which appears to arch over it. [2 definitions] |
| skydiving |
the sport of jumping from an airplane and performing body maneuvers before opening the parachute. |
| skylight |
a window in a roof or ceiling. Skylights let in light. |
| skyline |
the line formed by the apparent boundary between the earth and the sky; horizon. [2 definitions] |
| skyrocket |
an explosive that shoots high in the air before exploding in a shower of bright, colored sparks. [2 definitions] |
| skyscraper |
a very tall building. |
| slab |
a flat, wide, and thick piece of some solid. Rocks and foods can be slabs. |
| slack1 |
not tight; hanging loose; drooping. [5 definitions] |
| slacks |
casual pants for men or women. |
| slam1 |
to shut with force and loud noise. [4 definitions] |
| slander |
a false statement or statements made to hurt someone's reputation, or the act of making such statements. [2 definitions] |
| slang |
very informal speech that is made up of new words, or new meanings of old words. Slang is not appropriate for serious conversation or writing. |