The Collaborative International Dictionary
Allowancing
Allowance \Al*low"ance\, v. t. [imp. & p. p. Allowancing.] 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.
Wiktionary
allowancing
vb. (present participle of allowance English)