matrass /matˈrəs/

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

• tip off liquor
• tip-offs
• tip of the iceberg
• tip one's hat
• tippable
• tipped
• tipper
• tippers
• tippet
• tippets
• Tipp-Ex
• Tippex
• Tipp-Exed
• Tippexed
• Tipp-Exes
• Tippexes
• Tipp-Exing
• Tippexing
• tippier
• tippiest
• tipping
• tipping point
• tipping points
• tippings
• tipple