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

Derived forms: countersink bits

Type of: bit

• bromeosin
• bromic
• bromic acid
• bromide
• bromidic
• brominate
• bromine
• bromo-
• Bromo-seltzer
• bromoform
• bromophenol blue
• bromothymol blue
• brompheniramine maleate
• bromphenol blue
• brompton stock
• bromthymol blue
• Bromus
• Bromus arvensis
• Bromus inermis
• Bromus japonicus
• Bromus secalinus
• Bromus tectorum
• bronc
• bronchial
• bronchial artery