(Internet slang) Short for 胸が熱くなる.

a badge, an insignia worn on the chest

(anatomy, uncommon, dated) cephalothorax

(idiomatic) to throw out one's chest; to be puffed up with pride

(idiomatic) to be relieved, to feel refreshed

(idiomatic) a less powerful person partners with a more powerful person, such as for practicing

to have a lump in one's throat, stomach full of food / (idiomatic) to be emotionally moved

(idiomatic) to be unsettled, to be uneasy

(idiomatic) a more powerful person partners with a less powerful person, such as for practicing

to have a lump in one's throat, stomach full of food / (idiomatic) to be emotionally moved