a. - Beyond what is due, usual, expected, or necessary; additional; supernumerary; also, extraordinarily good; superior; as, extra work; extra pay.
n. - 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.
n. - 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.
n. - An edition of a newspaper issued at a time other than the regular one.
n. - A run, as from a bye, credited to the general score but not made from a hit.
n. - Something of an extra quality or grade.