fourth
adverb(fourth)
in the fourth place
Examples:
Fourthly, you must pay the rent on the first of the month.
fourth
adjective(fourth)
coming next after the third and just before the fifth in position or time or degree or magnitude
fourth
noun(fourth)
one of four equal parts
Synonyms: fourth part, one-fourth, one-quarter,
quarter,
quartern, twenty-five percent,
fourth
noun(fourth)
following the third position; number four in a countable series
fourth
noun(fourth)
the musical interval between one note and another four notes away from it