丑

プログレッシブ和英中辞典(第4版)

うし【^×丑】

〔十二支の一つ〕the Ox (the second of the twelve signs of the Chinese zodiac)；〔時刻〕the hour of the Ox (2:00 a.m. or the hours between 1:00 a.m. and 3:00 a.m.)；〔方角〕north-northeast

丑の刻参り
a visit to a shrine [temple] in the dead of night to 「pray for a person's death [lay a curse on a person]

丑年

the year of the Ox

丑の日

the day of the Ox；〔土用の〕the hottest day of the summer

丑三つ時

〔真夜中〕 ((in)) the dead of night

出典　小学館「プログレッシブ和英中辞典(第4版)」