1. To strengthen or improve defensive capabilities, systems, or strategies
The military decided to enhance defense along the border.
O exército decidiu reforçar a defesa ao longo da fronteira.
2. To make defensive measures more effective or robust
New technology will enhance defense against cyber attacks.
A nova tecnologia irá reforçar a defesa contra ataques cibernéticos.
3. To improve one's ability to protect or defend oneself
Regular training can enhance defense skills.
O treinamento regular pode melhorar as habilidades de defesa.