The Oxford Thesaurus An A-Z Dictionary of Synonyms - allotment n.

1) share, apportionment, ration, portion, quota, allowance, measure: Each prisoner was given a daily allotment of four ounces of black bread and a cup of water. 2) garden plot, kitchen garden, patch, tract, plot, Brit market garden, US truck garden: If I don't answer the phone, it's because I am digging my allotment.