fill-out

Etymology
From the phrasal verb.

Noun

 * 1) An option provided as one of a number of possible answers to a question in a form.
 * 2) An extra car added to a freight train in order to achieve a minimum tonnage.
 * 3) Something extra that is added to increase the size of something.
 * 4)  The amount by which a star in a binary system extends beyond its Roche lobe.
 * 1) Something extra that is added to increase the size of something.
 * 2)  The amount by which a star in a binary system extends beyond its Roche lobe.
 * 1) Something extra that is added to increase the size of something.
 * 2)  The amount by which a star in a binary system extends beyond its Roche lobe.
 * 1)  The amount by which a star in a binary system extends beyond its Roche lobe.
 * 1)  The amount by which a star in a binary system extends beyond its Roche lobe.
 * 1)  The amount by which a star in a binary system extends beyond its Roche lobe.
 * 1)  The amount by which a star in a binary system extends beyond its Roche lobe.
 * 1)  The amount by which a star in a binary system extends beyond its Roche lobe.
 * 1)  The amount by which a star in a binary system extends beyond its Roche lobe.