CHALCEDONY

REINFORCERIt strengthens control over police, right? EYEWITNESSTrial figure giving a firsthand account OUTONALIMBPositioned precariously … or where the ends of 16-, 24-, 35- and 49-Across can all be found INITIALIZEAssign a starting value, in computer programming lingo ... or a phonetic hint to 10- and 14-Across? LEADINGMANMale movie star GOBSTOPPERA hard sweet for a hard palate maybe? AYECAPTAINSailor's "Yes, sir!" ATANYPRICEPay certain crackpot, no matter the cost WISHYWASHYWith one throw, twice as weak? STUNTWOMANFilm's female daredevil POCKETDIALCall unwittingly IOWEYOUONE"Thanks so much!" NISSANLEAFElectric vehicle from Japan ECHOLOCATENavigate by sound