1. An abnormal or unwanted outgrowth or projection on the body; an excrescence.
Usage: Medical or anatomical context
2. Something regarded as an undesirable addition or appendage; a superfluous or objectionable element.
Usage: Figurative use

Examples

• The dermatologist examined the excrescency on the patient's skin.
• The new regulation was seen as an excrescency on an already complex system.
• Warts are common excrescencies that can be removed by a doctor.
• Critics viewed the subplot as an excrescency that detracted from the main narrative.
• The excrescency grew slowly over several months and required medical attention.