noun
regurgitation; vomiting; vomit
Refers to the act of bringing swallowed food or liquid back up, often used for babies or animals; can also mean the substance itself.
赤ちゃんがミルクの吐き戻しをした。
The baby spit up some milk.
猫が毛玉を吐き戻しした。
The cat regurgitated a hairball.
Compound of 吐き (haki, 'vomiting', continuative form of 吐く) + 戻し (modoshi, 'returning', continuative form of 戻す).