Godan verb with 'ku' ending, Intransitive verb
to become rusted together; to become rusted shut
さびつかせるよりもすり切らしたほうがいい。Better wear out than rust out. to rust; to become (completely) rusty; to be covered with rust
to become rusty (of a skill or ability); to become less effective
Also written 錆びつく【さびつく】、錆付く【さびつく】