1. restless tossing or rolling of the body, especially during illness or sleep
Usage: medical or formal; often used in clinical or literary contexts
2. boastful or ostentatious display; bragging
Usage: archaic; rare in modern usage

Examples

• The fever caused such jactation that the patient could not sleep through the night.
• His jactation in bed suggested he was in considerable discomfort.
• The old text condemned the nobleman's jactation of his wealth and titles.
• During the delirium, the patient exhibited violent jactation.
• She lay in jactation, unable to find a comfortable position.