|a sentence or phrase that is difficult to articulate clearly and quickly, such as Peter Piper picked a peck of pickled pepper|
|a chattering or flighty, light-headed person.|
|a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.|
word or group of words made difficult to articulate by a close sequence of similar consonantal sounds. Tongue twisters are often passed on for generations, becoming a rich part of folklore. Two widely known English-language twisters are "She sells sea shells beside the seashore" and one beginning "Peter Piper picked a peck of pickled peppers." Some are more difficult to enunciate-"The sixth sheik's sixth sheep's sick."
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