add. ·noun something of an extra quality or grade.
2. extra ·add. ·noun an edition of a newspaper issued at a time other than the regular one.
3. extra ·add. ·noun a run, as from a bye, credited to the general score but not made from a hit.
4. extra ·adj beyond what is due, usual, expected, or necessary; additional; supernumerary; also, extraordinarily good; superior; as, extra work; extra pay.
5. extra ·add. ·noun something in addition to what is due, expected, or customary; ·esp., an added charge or fee, or something for which an additional charge is made.
6. extra ·noun something in addition to what is due, expected, or customary; something in addition to the regular charge or compensation, or for which an additional charge is made; as, at european hotels lights are extras.