The only sign of life was a slight wriggling of his tail.
As a term of disparagement and contempt the word is also used of persons, from the idea of wriggling or creeping on the ground, partly, too, perhaps, with a reminiscence of Genesis iii.
No more wriggling away, to help prevent your baby from falling from high surfaces.
Does having three mean you'll feel them wriggling around earlier?
That's why I sit wriggling, saying I want to have a baby."