Basic Guidelines For English Spellings
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1The action of waving or gesturing with the arms; an instance of this.
2The use of insubstantial, unsupported, or sensational arguments or claims, especially in scientific discourse; an instance of this.
Mid 19th century. From arm + waving.
1That waves or gestures with the arms; characterized by such gestures.
2Using or involving insubstantial, unsupported, or sensational arguments or claims, especially in scientific discourse.
Late 19th century. From arm + waving.