The Sidewinder rattlesnake moves laterally (as do some other - mostly desert living - snakes)
lateral motion.
Snake
yes, it does, the adverb swiftly. It says that the snake was moving in a swift (rapid) manner.
By moving sideways.
Lateral flexion of the trunk involves moving the shoulders left or right towards the hips, therefore it is exercised in the frontal or coronal plane of motion.
My Corn Snake is quite slow, normally moving in a zig-zag pattern when moving in an open area, frequently stopping to 'sense the air'. I dare say if he was feeling threatened he would move much faster, probably in a straight line ! You can see a video clip of him moving on youtube, under corn snake slither.
Moving sideways refers to making lateral movements instead of moving forward or backward. It can also mean making little to no progress or advancement in a certain situation or endeavor.
Terminal moraines or terminal
The fastest venomous snake is the Black Mamba. It is able to reach speeds in excess of 12 miles per hour.
You should just leave the egg alone. The snake will eventually hatch and then the snake will most likely leave your property. By moving the egg you could kill the baby inside.
swamps and slow moving waters in eastern Australia
No, means moving on belly like a snake, can reference other creatures but usually used in reference to a snake, worm or something without appendages