Webster's Revised Unabridged Dictionary · 1913

Behalf

Behalf ({not transcribed}) , noun

[Old English on-behalve in the name of, bihalven by the side of, from Anglo-Saxon healf half, also side, part: akin to German halb half, halber on account of. See Be-, and Half, n.]

Advantage; favor; stead; benefit; interest; profit; support; defense; vindication.
In behalf of his mistress's beauty. — Sir P. Sidney
Against whom he had contracted some prejudice in behalf of his nation. — Clarendon
Collocations (2)
In behalf of , in the interest of.
On behalf of , on account of; on the part of.