What does allowance mean?
The definition of allowance
Al*low”ance, n.
Etym: [OF. alouance.]

1 Approval; approbation. [Obs.] Crabbe.
2 The act of allowing, granting, conceding, or admitting; authorization; permission; sanction; tolerance. Without the king’s will or the state’s allowance. Shak.
3 Acknowledgment. The censure of the which one must in your allowance o’erweigh a whole theater of others. Shak.
4 License; indulgence. [Obs.] Locke.
5 That which is allowed; a share or portion allotted or granted; a sum granted as a reimbursement, a bounty, or as appropriate for any purpose; a stated quantity, as of food or drink; hence, a limited quantity of meat and drink, when provisions fall short. I can give the boy a handsome allowance. Thackeray.
6 Abatement; deduction; the taking into account of mitigating circumstances; as, to make allowance for the inexperience of youth. After making the largest allowance for fraud. Macaulay.
7 (com.)
A customary deduction from the gross weight of goods, different in different countries, such as tare and tret.

Al*low”ance, v. t.
[imp. & p. p. Allowancing.] Etym: [See Allowance, n.]

To put upon a fixed allowance (esp. of provisions and drink); to supply in a fixed and limited quantity; as, the captain was obliged to allowance his crew; our provisions were allowanced.