Semantics

breast
Ребёнок жђдно сосђл грџдь мђтери. The child greedily sucked at its mother's breast.
Лљвая грџдь у неё былђ открІта. Her left breast was uncovered.
bosom, bust
У вошљдшей дђмы былђ пІшная грџдь. The lady who came in had a large bosom/bust.
breasts
Посмотрќ на менї! Старџха — грџдь вІсохла. Look at me! An old woman with withered breasts.
chest
приплєснутая грџдь a flat chest
This entry is concerned with the use of the word грџдь to refer to each of the two breasts on a woman's body or to both breasts seen as a single shape. Both the singular and the plural forms occur in the first usage. The singular form грџдь also occurs in the second usage, i.e. it refers to a woman's bosom. In informal style, the plural form грџди is also used to refer to a woman's bosom.

The singular form грџдь is also used in standard style to refer to the chest of a human or animal. This meaning is described in a separate entry (грџдь1). The word грџдь is also used to refer to the part of clothing that covers the chest. This meaning is not described in this dictionary, nor is the meaning "imaginary seat of emotions" (И вдрџг ћн почџвствовал такџю тоскџ в грудќ! "And suddenly he felt such anguish in his bosom!")

For the differences between грџдь2 and its synonym бєст see Lexical Relationships, below.