Longman Dictionary of Contemporary English
Wiktionary
n. 1 (context idiomatic English) warfare or other physical conflict in which one or more combatting parties use especially demoralize and frightening tactics to attempt to unnerve their opponents. 2 (context idiomatic by extension English) A situation in which opposed parties refrain from direct conflict but maintain a tense, contentious relationship in which each uses annoyances or intimidate psychological tactics to attempt to dishearten and unnerve the other.
WordNet
n. the use of psychological tactics to destroy the opponents' morale [syn: psychological warfare]
Wikipedia
"War of Nerves" is an episode from the TV series M*A*S*H, the fifth episode of its sixth season. Originally airing on October 11, 1977, with a rebroadcast on June 5, 1978 (which saw CBS move the show to Mondays at 9 p.m.), it was written and directed by Alan Alda.
"War of Nerves" is a song by All Saints, which was released as the fifth and final single from their debut album, All Saints. In the UK it peaked at #7 in the charts.
Usage examples of "war of nerves".
Before any murder took place, there would be another war of nerves, of bluff and counterbluff, between him and Ellins.
Although the pace and violence of Haven's war of nerves had increased steadily, Manticore had held its own in actual encounters to date.
Karl's little war of nerves with the slavers would have them all on edge.