shark
/ʃɑ:k; ʃɑrk/ n
1 any of various types of sea-fish with a triangular fin on its back, some of which are large and dangerous to bathers 鲨鱼.
2 (infml derog 口, 贬) person who extorts money from others or lends money at very high interest rates; swindler 敲诈勒索的人; 放高利贷的人; 骗子.