breast/ brεst /

1.noun [c] [of woman] 
乳房

2.noun [c] [liter] 
(chest) 胸部

3.noun [c/u] [Cooking] 
(of chicken,lamb) 胸脯肉

4.noun [c] [of bird] 
前胸

to make a clean breast of sth
坦白承认某事