Definition of dangling participle noun from the Oxford Advanced Learner's Dictionary

 

dangling participle

 noun
noun
BrE
 
; NAmE
 
(grammar)
 
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a participle that relates to a noun that is not mentioned ‘Dangling participles’ are not considered correct. In the sentence ‘While walking home, my phone rang’,‘walking’ is a dangling participle. A correct form of the sentence would be ‘While I was walking home, my phone rang’.
See the Oxford Advanced American Dictionary entry: dangling participle