midwinter/ˌmɪdˈwɪntə(r); `mɪd`wɪntɚ/ n[U]the middle of winter, around 21 December 仲冬(12月21日前後) [attrib 作定语]a ,midwinter('s) `night 仲冬之夜.
牛津英汉双解词典