Translation guide
A bread knife is a serrated knife designed for slicing bread. In Japanese, it is commonly referred to using the loanword パン切りナイフ or the more native パン切り包丁.
The learner wants to refer to the kitchen tool specifically used for cutting bread.
The most common and straightforward term, combining 'bread' (パン) and 'cutting knife' (切りナイフ).
Please cut the bread with the bread knife.
Uses 包丁 (kitchen knife) instead of ナイフ, sounding slightly more traditional or domestic.
A less common direct loan from English 'bread knife'. Understandable but not the typical term.
I want to replace my bread knife.
This bread knife cuts really well.