Gloves is the answer
I have a thumb and four fingers, but I have no flesh or bone. Who am I?
Lying there in the yard so neat was something very good to eat. It had neither flesh not bone, but in 21 days it walked alone. What is it?
These words are their own opposites. They have contradictory meanings depending on the context in which they are used. They are also called contronyms. An example is "cleave" which means both "to stick to" and "to split apart". Ready?
I do not have fingers, but I have a ring. Dogs bark when they hear me ding. I introduce visitors, though not by their names. Naughty little children push me in their games.
What am I?