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intr.v. cop·u·lat·ed, cop·u·lat·ing, cop·u·lates
1. To engage in sexual intercourse in which the penis is inserted into the vagina.
2. To transfer male reproductive cells from one individual to another, usually into an internal organ or cavity, such as a cloaca. Used of animals.
[Latin cōpulāre, cōpulāt-, to join together, from cōpula, link.]
cop′u·la·to′ry (-lə-tôr′ē) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.