胸

Glyph origin
Originally written. Now.

Etymology
Unclear. Noting that Middle Chinese *x- could have arisen from voiceless *r̥-, considers it either connected to 🇨🇬 or from  (compare 🇨🇬 > 🇨🇬 > 🇨🇬 > 🇨🇬; related to ).

Definitions

 * 1) chest; thorax
 * 2) breast; bosom
 * 3)  mind; heart of hearts; thought

Synonyms




Kanji

 * 1) breast, chest
 * 2) heart, feeling, thought

Compounds

 * : chest girth
 * : bust
 * : an ample bosom, large breasts
 * : one's thoughts, one's mind
 * : noisy thoughts: a bad feeling about something, uneasiness, foreboding
 * : neckline

Etymology 1
From. First attested in the  of 712. Possibly the original form of mune below.

The first edition of the Nihon Kokugo Daijiten says that this is cognate with, from the underlying idea of central or main portion. However, see Etymology 2.

Possibly also related with, , from the idea of cavity.

Seldom used in isolation even in Old Japanese. Only found as the first element of compounds in modern Japanese.

Noun

 * 1) chest, breast
 * 奴婆多麻能　久路岐美祁斯遠 / 麻都夫佐尓　登理與曾比 / 淤岐都登理　牟那美流登岐 / 波多多藝母　許禮婆布佐波受 / 幣都那美　　曾迩奴岐宇弖
 * ぬばたまの　くろきみけしを / まつぶさに とりよそひ / おきつとり むなみるとき / はたたぎも これはふさはず / へつなみ そにだきうて
 * nubatama no kuroki mikeshi o / matsubusa ni toriyosohi / oki tsu tori muna miru toki / hatatagi mo kore wa fusawazu / he tsu nami so ni dakiute
 * I put on black iris-seed garments with schisandra, and though I fluff up my garments like when the ocean birds look at their chests, I say this is not good and I cast them off into the sea's waves...
 * 1) heart, inner thoughts
 * 1) heart, inner thoughts

Derived terms

 * : a bib: a cloth covering the chest to protect from dirt or food
 * : a breast drill, gimlet, or awl, with a flat end for pushing with the chest
 * : “chest board” → the flat area of the chest; a part of the breastplate in traditional Japanese armor
 * , : part of riding tack, a cord or strap running around the chest and through the on the front of the saddle
 * : older form of munagai above
 * : metal fittings on the
 * : thinking in one's head to figure something out before doing it
 * : “chest shit” → a bad feeling, a strong dislike
 * , : the area where the collar of a kimono or other robe overlaps in front
 * : a feeling of uncomfortable pressure in the chest, as when anxious or distressed
 * : “black breast” →, the
 * : unpleasant and upsetting
 * : chest hair
 * : the solar plexus, the area just below the sternum
 * : “chest noise” → uneasiness, foreboding
 * : thinking in one's head to figure something out before doing it
 * : thinking in one's head to figure something out before doing it
 * : “chest screen” → the ribs
 * : the bottom of one's heart, one's innermost thoughts
 * : tying one's high on one's chest instead of at the waist
 * : breast, boob
 * : a steep slope, as on a hill or mountain
 * : a very steep street or path; the last hard push before reaching a goal
 * : the bottom of the chest, the area just below the sternum
 * : thinking in one's head to figure something out before doing it
 * : very sad or uneasy in a way that makes one's chest constrict
 * : “chest beard” → chest hair
 * : a cord across the chest for holding a kimono or haori closed
 * : “chest fin” → pectoral fin
 * : the breastbone, the sternum
 * , : the chest; the area in front of the chest
 * : heartburn
 * : to push through bushes or scrub using one's chest, to bushwhack
 * : pushing through bushes or scrub using one's chest, bushwhacking; the breadth of the chest

Etymology 2
From, from. The apophony is similar to the phonetic process observed in the shift from to ; see WT:AJPX.

Alternatively, may be a compound of. Other theories have been suggested.

The first edition of the Nihon Kokugo Daijiten says that this is cognate with and, , from the underlying idea of central or main portion. However, the accent of in the Heian period is , while the accent of  is. This suggests that they may not be directly related.

Notably, and  also have an older reading muna that is only used in compounds (for, possibly only in place names). Meanwhile, (Heian  ) appears in  of, and this reading is used as a standalone noun rather than in compounds. This is consistent with other nouns that have paired vowel forms, and suggests that muna is probably the original form, and that the compound derivation is a folk etymology.

First attested in the  of 712.

Noun

 * 1) chest, breast
 * 2) heart, inner thoughts
 * 3) bosom, breasts
 * 1) bosom, breasts

Derived terms

 * : “one's chest is noisy” → to be unsettled, to be uneasy
 * “lend a chest” → a more powerful person partners with a less powerful person, such as for practicing
 * “borrow a chest” → a less powerful person partners with a more powerful person, such as for practicing

Etymology
From.