(transitive) To make equal; to cause to correspond in amount or degree.to equalize accounts, burdens, or taxes
WordsworthOne poor moment can suffice To equalize the lofty and the low.
WhatelyNo system of instruction will completely equalize natural powers.
(obsolete, transitive) To be equal to; to equal, to rival. 16th-19th c.
1590, Edmund Spenser, The Faerie Queene, III.9:But a third kingdom yet is to arise Out of the Trojans scattered ofspring, That in all glory and great enterprise, Both first and second Troy shall dare to equalise.
Miltonpolling the reformed churches whether they equalize in number those of his three kingdoms
(intransitive, sports) To make the scoreline equal by scoring points. from 20th c.