allotment (n.)youdaoicibaDictYouDict[allotment 词源字典]
1570s, "action of allotting," from Middle French allotement, from Old French aloter (see allot). Or else a native formation from allot + -ment. Meaning "portion assigned to someone or some purpose" is from 1670s.[allotment etymology, allotment origin, 英语词源]