Protrusion (noun)

A projecting part of something; an outward bulge or bump.

Origin:

Late 16th century: from latin protrusio(n-), from protendere 'stretch out'.

Examples:

1. The protrusion on the side of the building was caused by a structural weakness.
2. The protrusion of the disk in her back was causing her significant pain.
3. The protrusion of the bump on the side of the road indicated that there had been a recent accident.
4. The protrusion of the rock from the cliff face created a distinctive landmark.
5. The protrusion of the root from the soil was a sign that the tree was struggling for water.