also: にくじる
noun
meat juice; gravy; meat broth
Refers to the liquid from cooked meat: juices from grilled or roasted meat, gravy, or a clear meat-based soup/bouillon. The reading にくじる is often used for the juices/gravy sense, while にくじゅう can sound more formal or refer to a clear broth.
ステーキを切ると肉汁があふれ出た。
When I cut the steak, the meat juices overflowed.
この肉じゃがは肉汁がよく染みている。
This nikujaga is well soaked in the meat broth.
Compound of 肉 (niku, 'meat') and 汁 (shiru/jū, 'juice, broth'). The reading にくじゅう uses the on'yomi of 汁, while にくじる uses the kun'yomi.