A person who makes channels or grooves; in textiles, someone who works with the chaine (warp); or dialectally, someone who channels.
From 'channel' or 'chane' + the suffix '-er' (one who does something). The '-er' suffix is one of English's most fundamental ways of creating agent nouns, dating back to Old English.
The suffix '-er' is so powerful in English that you can attach it to almost any verb and create a person or tool—which means English speakers instinctively know about 100 occupations that have probably never existed, like 'clicker' or 'shrinker.'
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