Wiktionary
vb. (context idiomatic English) To firmly maintain one's viewpoint, principles, or situation; to refuse to change one's practices or plans.
WordNet
Wikipedia
"Hold the Line" is a song by the American rock band Toto. The song was written by the band's keyboardist David Paich, and the lead vocals were performed by Bobby Kimball. The song was released as the band's debut single in the music industry, and was featured on their debut 1978 eponymous album. The song was a huge success; it reached #5 in the U.S. Billboard Hot 100 chart during the winter of 1978–79.
"Hold The Line" is a pop song performed by German singer Jeanette. The song was written by Frank Johnes, Bodybrain and Wonderbra, and produced by Tom Remm and Frank Kretschmer for Jeanette's fourth album Break On Through (2003). It was released as a single on 28 June 2004 in Germany.
Usage examples of "hold the line".
We will hold the line until they arrive, and I want a fortification cutting across country.
Only a little luck, the most immediate of all the instant magics, but sufficient, perhaps, to hold the line between power and the void.