Adjective:

1. capable of contracting or being contracted;

   "the contractile wings of an insect"
   

contractn.合同；婚约；合约；契约v.缩小；订合同；缩短；感染（疾病）；招致contract rent合同地租contract time合同期间contract area[经] 合同区contract form[经] 合同格式contract norm合同规范contract free契约自由contract base以合同额为计算基础contract sign[化] 合同签定日期Contracts Law民法通则contract year合同<约>年

1. The heart is a highly contractile organ.
   心脏是具有高度收缩性的器官。