To identify which is not a tort:
1. A tort is a civil wrong (e.g., defamation, negligence, false imprisonment) for which damages can be claimed, governed by tort law.
2. Homicide, however, is a criminal offense under the Indian Penal Code, 1860 (e.g., murder or manslaughter), dealt with under criminal law, not tort law.
3. While related civil claims (e.g., wrongful death) may arise, homicide itself is a criminal act, not a tort.
Therefore, the correct answer is (3) Homicide.