109A: [Specialist in childbirth and prenatal care] is NURS E-MID WIFE , with a backwards DIME . It’s explained by FLIP OF A COIN at 123A: [Heads-or-tails action, and a hint to the circled squares in 109 Across]. That one might be a slight oddball in that I think most of us are used to hearing it as COIN FLIP, but I wanted to keep the “reverse” synonym at the beginning of each explainer phrase. It’s explained by TURNAROUND TIMES at 91A: [Periods that are often short in fast-paced work environments, and a hint to the circled squares in 74 Across]. It’s explained by RETURN OF THE JEDI at 51A: [1983’s highest grossing film, and a hint to the circled squares in 70 Across].

Source: Washington Post January 19, 2020 14:03 UTC