Answer: da

AnswerCrossword Clue
damale hairstyle, esp. of the 1950s, in which the hair is slicked back on both sides to overlap at the back of the head
daDepartment of Agriculture
daDictionary of Americanisms
daducktail
dafrom; of (used in Italian and Portuguese personal names, originally to indicate place of origin)
dayes
daa heavy Burmese knife