The term 'spring month' can be broken down into three separate words: MAY, APRIL, and MARCH. MAY is a 3-letter word that refers to the fifth month of the year in the Gregorian calendar. APRIL is a 5-letter word that refers to the fourth month of the year in the Gregorian calendar. MARCH is also a 5-letter word that refers to the third month of the year in the Gregorian calendar. All three of these months are considered to be part of the spring season.