1. a small rounded protuberance or knob-like structure
Usage: medical; botanical
2. a terminal swelling at the end of a nerve fiber
Usage: anatomy; neuroscience

Examples

• The botanist examined the small boutons along the plant stem.
• Nerve boutons contain neurotransmitters that facilitate communication between cells.
• The microscopic boutons were clearly visible under high magnification.
• Each bouton serves as a connection point in the nervous system.
• The researcher studied how boutons form during neural development.
• Small boutons appeared on the surface of the tissue sample.