The Collaborative International Dictionary of English v.0.48:

Chore \Chore\ (ch[=o]r), n. [The same word as char work done by
   the day.]
   A small job; in the pl., the regular or daily light work of a
   household or farm, either within or without doors. [U. S.]
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Chore \Chore\, v. i. [imp. & p. p. Chored; p. pr. & vb. n.
   Choring.]
   To do chores. [U. S.]
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Chore \Chore\, n.
   A choir or chorus. [Obs.] --B. Jonson.
   [1913 Webster]

WordNet (r) 3.0 (2006):

chore
    n 1: a specific piece of work required to be done as a duty or
         for a specific fee; "estimates of the city's loss on that
         job ranged as high as a million dollars"; "the job of
         repairing the engine took several hours"; "the endless task
         of classifying the samples"; "the farmer's morning chores"
         [syn: job, task, chore]