Definition of "xx" [xx]

• Symbols or designations noting ale of certain qualities or degrees of strength, derived originally from marks on the brewers' casks. Compare X, 5. (noun)

The Century Dictionary (Public Domain)

• "Mortgage payments must not exceed xx% (xx to be filled in later) of family income from all sources."
• "OR awk - F: '' | while read xx do chsec - f/etc/security/lastlog - a "unsuccessful_login_count = 0" - s $xx done"
• "Sign up for a contract for $xx per month for xx months, and watch Bell increase your prices in a way that won't void the contract."