What is the meaning of Defect?

A fault or malfunction.

The quantity or amount by which anything falls short.

A part by which a figure or quantity is wanting or deficient.

To abandon or turn against; to cease or change one's loyalty, especially from a military organisation or political party.

To desert one's army, to flee from combat.

To join the enemy army.

To flee one's country and seek asylum.

broken, not working

a defect

defective

defect

Source: wiktionary.org