• IPA: /ˈtɛ.nɪs/

tennis (uncountable)

1. (sports) A sport played by two players (or four in doubles), who alternately strike the ball over a net using racquets.
2. (dated) A match in this sport.
   • 1918, Violet Hunt, The Last Ditch (page 95)

     We go about to parties in the daytime as usual, teas and tennises […]

3. (obsolete) An earlier game in which a ball is driven to and fro, or kept in motion by striking it with a racquet or with the open hand.
   • 18, Thomas Babington Macaulay, chapter 11, in The History of England from the Accession of James the Second, volume (please specify ), London: Longman, Brown, Green, and Longmans, OCLC 1069526323 ↗:

• French: tennis
• German: Tennis
• Italian: tennis
• Portuguese: tênis, ténis
• Russian: те́ннис
• Spanish: tenis

tennis (tennises, present participle tennising; past and past participle tennised)

1. (intransitive, dated) To play tennis.
2. (transitive) To drive backward and forward like a tennis ball.