/ tʃɔː(r); NAmE / noun
1.
a task that you do regularly :
doing the household / domestic chores
➡ note at task
2.
an unpleasant or boring task :
Shopping's a real chore for me.
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WORD ORIGIN
mid 18th cent. (originally dialect and US): variant of obsolete char or chare a turn of work, an odd job, chore .