Lagrippe – Influenza.
Lockjaw – Tetanus, an infectious disease affecting the muscles of the neck and jaw in which the jaw beomes firmlt locked. Untreated, it is fatal in 8 days. Synonyms: trismus, tetanus.
Lues disease – Syphilis.
Lues venera – Venereal disease; sexually transmitted disease (STD).
Lumbago – Back pain.
Lung fever – Pneumonia.
Lung sickness – Tuberculosis.
Lying in – Time of delivery of infant.
