colloquialismcol‧lo‧qui‧al‧is‧m /kəˈləʊkwiəlɪzəm $ -ˈloʊ-/ noun [countable] 
an expression or word used in informal conversation
an expression or word used in informal conversation- work-to-rule
- workweek
- world
- World Almanac
- World Bank
- world-beater
- world-beating
- world-class
- WorldCom
- World Council of Churches
- World Cup
- World English
- world-famous
- World Health Organization
- worldliness
- worldly
- worldly-wise
- world music
- world power
- world record
- world-record
- World Series
- World Service
- World Trade Center
- World Trade Organization