matrass /matˈrəs/

1. A long-necked chemical flask
2. A hard-glass tube closed at one end

• run the guard
• run the risk of
• run the show
• run through
• run-through
• run-throughs
• runtier
• runtiest
• run time
• run-time error
• run-time errors
• run times
• run-time system
• runtish
• run to
• run to earth
• run together
• run to ground
• run to seed
• run to waste
• runts
• runty
• run up
• run-up
• run up against