they say that TO BIND BOOKS is one use for the verb to bind. Is it in the physical sense or does it mean that we just can't stop reading the book till we get to know the end of the story? Please, help me out?

i'm also an ESL teacher. i use pictures to explain difficult concepts. i'm sending you a picture of bookbinding.

Binding is what makes the pages of a book stick together. It uses any or all of gluing, stapling, stitching. And then the harder cover is added.

Books are sewn together....bound together by thread...that's what it means. Get yourself an older book and pull it apart. You'll find thread in the part where the books pages are joined. There is an occupation called a binder and it's the person who lines up all of the books - I'm speaking of hard cover books as soft covers are glued.

Bookbinding is the process of physically assembling a book from a number of separate sheets of paper or other material.

I used work in a bindery. It definitely means putting the book together. Lots of books are glued.

I now work in a small bindery where we hand bind books or reports by hand with spiral, coil, etc. bindings.

It is actually physically binding them... putting them together