while
1. [ conjunction ] coordinating conjunction, when on the other hand
2. [ noun ] a period of indeterminate length (usually short) marked by some action or condition
Synonyms: spell patch piece
Examples:

"he was here for a little while" "I need to rest for a piece" "a spell of good weather" "a patch of bad weather"

Related terms: time snap hot_spell cold_snap
3. [ conjunction ] conjunction, at the same time
4. [ pronoun ] preposition, during the time
Synonyms: whilst
Similar spelling:   whole
  whale
  Whaley
  Whalley
  wheel
  wheal
  wholly
  wile