To substitute for; to replace; (theater) to serve as an understudy.
To make one of a party in a bet or other speculation.
To take a side in a dispute.
A substitute; a replacement.
To make do with; to use in manner different from that originally intended
To make useful; to find a practical use for.
To make use of; to use.
To make best use of; to use to its fullest extent, potential, or ability.