"the first milk secreted in the breasts after childbirth," 1570s, from Latin colostrum "first milk from an animal," earlier colustra, a word of unknown etymology.
updated on January 22, 2018
英语词源词典收录了45867条英语词源词条，基本涵盖了全部常用英语词汇的起源、历史，是研究英语词汇或通过词源学英语的必备工具。