American English initialism (acronym) for district attorney from 1934; for duck's ass haircut (or, as OED would have it, duck's arse), from 1951. The haircut so called for the shape at the back of the head.
cytotoxic
czar
Czech
Czechoslovakia
D
D.A.
D.A.R.
d.c.
D.C.
D.D.
D.D.T.
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