pricklet

Example:The rose bush has a coat of tiny prickles that deter animals from eating its foliage.

Definition:A small sharp point that protrudes from the surface of certain plants, causing discomfort or irritation when touched.

Example:She had to be careful not to brush against the rosebush and pick up a thorn.

Definition:A sharp, pointed structure growing from a branch, stem, or leaf of a plant, often used for defense.