Nightengale's rhymes with:
nightengales, nightengales, nightengales, nightengales, angles, bangles, bengals, bojangles', dangles, dingell's, engels, gingles, ingels, ingles, jingles, jungels, jungles, mangels, mangles, mingles, mongols, nightengales, pringle's, rectangles, shingles, singles, tangles, triangle's, triangles, wrangles