The word "wiggle" has multiple meanings, depending on its context.
1) Verb - To move or sway from side to side in a lively manner, typically with short quick movements. For example, "She wiggled her hips as she danced."
2) Noun - A small movement made by shaking or jerking one's body, often used for emphasis or to express excitement or surprise. For example, "He gave a little wiggle of joy when he heard the news."
3) Informal - To move around in an attempt to get comfortable while sitting or lying down. For example, "She kept wiggling in her seat until she found a position that was comfortable."