What is the meaning of «_»?

5-letter words containing

• 5-letter words containing n

• 5-letter words containing l

• 5-letter words containing p

• 5-letter words containing r

• 5-letter words containing b

5-letter words starting with

• 5-letter words starting with l

• 5-letter words starting with d

• 5-letter words starting with o

• 5-letter words starting with i

• 5-letter words starting with e

5-letter words in the middle

• 5-letter words in the middle e

• 5-letter words in the middle c

• 5-letter words in the middle d

• 5-letter words in the middle d

• 5-letter words in the middle e

5-letter words ending with

• 5-letter words ending with t

• 5-letter words ending with e

• 5-letter words ending with a

• 5-letter words ending with l

• 5-letter words ending with k

5-letter words excluding

• 5-letter words excluding o

• 5-letter words excluding i

• 5-letter words excluding e

• 5-letter words excluding g

• 5-letter words excluding e