1. A bit for enlarging the upper part of a hole
   - countersink, countersink bit

Type of: bit

Encyclopedia: Counterbore

• unlobed
• unlocated
• unlock
• unlocked
• unlogical
• unlooked-for
• unloose
• unloosen
• unlovable
• unloved
• unlovely
• unloving
• unlubricated
• unluckily
• unluckiness
• unlucky
• unmade
• unmake
• unmalicious
• unmalleability
• unmalleable
• unmalted
• unman
• unmanageable
• unmanageableness