bimble vs stretch one's legs

bimble

verb

  • To walk with no particular haste or purpose. 

noun

  • A gentle, meandering walk with no particular haste or purpose. 

stretch one's legs

verb

  • To walk about, especially after prolonged time sitting or lying down. 

How often have the words bimble and stretch one's legs occurred in a corpus of books? (source: Google Ngram Viewer )