Noun while has 1 sense
  1. while, piece, spell, patch - a period of indeterminate length (usually short) marked by some action or condition; "he was here for a little while"; "I need to rest for a piece"; "a spell of good weather"; "a patch of bad weather"
    --1 is a kind of time
    --1 has particulars: cold spell, cold snap; hot spell; snap