The Collaborative International Dictionary of English v.0.48:

Earning \Earn"ing\, n.; pl. Earnings.
   That which is earned; wages gained by work or services; money
   earned; -- used commonly in the plural.
   [1913 Webster]

         As to the common people, their stock is in their
         persons and in their earnings.           --Burke.
   [1913 Webster]

WordNet (r) 3.0 (2006):

earnings
    n 1: the excess of revenues over outlays in a given period of
         time (including depreciation and other non-cash expenses)
         [syn: net income, net, net profit, lucre, profit,
         profits, earnings]
    2: something that remunerates; "wages were paid by check"; "he
       wasted his pay on drink"; "they saved a quarter of all their
       earnings" [syn: wage, pay, earnings, remuneration,
       salary]

Moby Thesaurus II by Grady Ward, 1.0:

124 Moby Thesaurus words for "earnings":
   accession, acquirement, acquisition, addition, attainment, avails,
   base pay, box office, capital gains, cleanup, clear profit,
   coming by, commissions, compensation, credit, credits,
   dismissal wage, disposable income, dividend, dividends,
   dragging down, earned income, emolument, escalator clause,
   escalator plan, filthy lucre, financial remuneration, gain,
   gaining, gains, gate, gate receipts, get, getting, getting hold of,
   gettings, gleanings, gross, gross income, gross profit,
   gross receipts, guaranteed annual wage, hire, hoard, income,
   intake, interest, killing, living wage, lucre, make, making,
   makings, minimum wage, moneygetting, moneygrubbing, moneymaking,
   neat profit, net, net income, net profit, net receipts, obtainment,
   obtention, output, paper profits, pay, pay and allowances, payment,
   payroll, pelf, percentage, perk, perks, perquisite, pickings,
   portal-to-portal pay, proceeds, procural, procurance, procuration,
   procurement, produce, profit, profits, purchasing power, rake-off,
   real wages, receipt, receipts, receivables, remuneration, return,
   returns, revenue, royalties, salary, securement, severance pay,
   sliding scale, stipend, store, take, take-home, take-home pay,
   take-in, takings, taxable income, total compensation, trover,
   unearned income, wage, wage control, wage freeze, wage reduction,
   wage rollback, wage scale, wages, wages after deductions,
   wages after taxes, wealth, winning, winnings, yield