名詞 midriff:

1. the middle area of the human torso (usually in front)
   同義詞：middle, midsection
2. (anatomy) a muscular partition separating the abdominal and thoracic cavities; functions in respiration
   同義詞：diaphragm

mid.riff

n.（名詞）
See diaphragm
參見 diaphragm
The middle outer portion of the front of the human body, extending roughly from just below the breast to the waistline.
上腹部：人體正前面的中部，大致從胸正下方延伸至腰

來源：
Middle English midrif
中古英語 midrif
from Old English midhrif
源自 古英語 midhrif
midd [mid] * see mid
midd [在…中] *參見 mid
hrif [belly] * see k wrep-
hrif [腹部] *參見 k wrep-

【引伸】
mid.riff
adj.（形容詞）