runt
US
UK runt n: (smallest animal in a litter) (尤指一胎中最小的)
SC 发育不全的矮小动物 fā yù bù quán de ǎi xiǎo dòng wù
The runt of the litter was much smaller than his brothers and sisters.
runt n: slang, figurative, pejorative (small weak person) (俚语，轻蔑语)
SC 侏儒，小矮子 zhū rú，xiǎo ǎi zi
That little runt needs to learn to defend himself.