Origin: Latin prefix inter-
Intercourse has 5 different meanings across 2 categories:
communication between individuals
"The two departments maintained constant intercourse through daily emails and phone calls to ensure smooth operations."
sexual activity between individuals, especially the insertion of a man's penis into a woman's vagina until orgasm and ejaculation occur
"The couple engaged in intercourse to express their love and desire."
Communication, conversation.
"The two diplomats engaged in secret intercourse to negotiate a peace treaty without their leaders knowing."
In plain English: Intercourse is sexual activity between two people who are intimate with each other.
"The marriage was troubled after rumors of sexual misconduct spread through the community."
To have sexual intercourse.
"After years of dating, they finally decided to sleep together and had their first sexual intercourse."
In plain English: To have sexual relations with someone else.
"I will have intercourse with my husband this evening after we finish dinner."
A particular town in the Commonwealth of Pennsylvania in the United States
"The residents of Intercourse, a charming town in Pennsylvania, are known for their annual folk festival."
The word comes from Old French entrecours, which was derived from the Late Latin phrase intercursus. Originally, it meant a crossing or meeting between two things.