What is the meaning of Defense_in_depth?

5-letter words containing

• 5-letter words containing n

• 5-letter words containing e

• 5-letter words containing i

• 5-letter words containing e

• 5-letter words containing u

5-letter words starting with

• 5-letter words starting with i

• 5-letter words starting with r

• 5-letter words starting with e

• 5-letter words starting with a

• 5-letter words starting with g

5-letter words in the middle

• 5-letter words in the middle d

• 5-letter words in the middle i

• 5-letter words in the middle k

• 5-letter words in the middle r

• 5-letter words in the middle a

5-letter words ending with

• 5-letter words ending with a

• 5-letter words ending with i

• 5-letter words ending with i

• 5-letter words ending with u

• 5-letter words ending with r

5-letter words excluding

• 5-letter words excluding u

• 5-letter words excluding e

• 5-letter words excluding e

• 5-letter words excluding e

• 5-letter words excluding s