What does breast mean?
"Breast" is primarily a noun with two closely related meanings: either of the two mammary glands on a woman's chest, which produce milk to nourish an infant, and, more broadly, the front upper part of the human torso — the chest — especially when regarded as the seat of the emotions, as in literary phrases like "a heavy breast." The word extends to birds, where it denotes the corresponding part of the body, frequently appearing in culinary contexts such as "chicken breast." As a verb, "breast" is now mostly literary, meaning to confront resolutely or to move forward against opposition, as a ship might "breast the waves." The noun is standard in medical, everyday, and formal registers alike, while the verb has a distinctly elevated tone. Common fixed expressions include "breast cancer," "breast milk," and the idiom "make a clean breast of," meaning to confess fully. Its derivatives — breastbone, breaststroke, breastplate — show how deeply the word is woven into English.
Either of the two mammary glands on a woman's chest, which produce milk.
"She fed the infant at her breast."
Standard in both medical and everyday registers.
The front upper part of the human chest; figuratively, the seat of emotion.
"He pressed his hand to his breast and vowed never to lie again."
This sense is somewhat formal or literary today; "chest" is more common.
The corresponding front part of a bird's body, especially considered as food.
"Grill the chicken breast until golden brown."
To confront or advance resolutely against something; to push through or overcome.
"They breasted the final climb just as the sun broke over the ridge."
Chiefly literary or poetic in modern usage.
Regular plural. When referring to the anatomical sense, the plural typically applies to the pair of mammary glands; the singular may refer to one or to the concept generally.
"Both breasts were examined during the routine screening."
The word "breast" shares an ancient root with "brood" — both trace back to a Proto-Indo-European idea of nurturing and swelling with life.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of breast
"Breast" derives from Old English "brēost," which in turn traces back to Proto-Germanic *breustam, a root shared with German "Brust" and Dutch "borst." Further back, it is connected to Proto-Indo-European roots associated with swelling or sprouting, making it a distant relative of words like "brood" and possibly "breathe." It has been in continuous use in English since the earliest written records of the language, with its verb form emerging later in Middle English.
Related word forms
How breast is actually used
As a noun, "breast" ranges from neutral medical usage ("breast cancer") to literary or poetic uses referring to the chest as a seat of feeling. The verb sense ("to breast the waves") is now largely literary. In everyday speech, "chest" is more common for the general torso region.
Easily confused with breast
"Chest" refers to the whole front of the torso including ribs and organs, while "breast" can mean either that whole area (more formal/literary) or specifically the mammary glands.