the rite of staying awake for devotional purposes (especially on the eve of a religious festival)(noun.act)
source: wordnet30
The act of watching; forbearance of sleep; vigil; wakeful, vigilant, or constantly observant attention; close observation; guard; preservative or preventive vigilance; formerly, a watching or guarding by night.(noun)
To be awake; to be or continue without sleep; to wake; to keep vigil.(verb)
source: webster1913
To give heed to; to observe the actions or motions of, for any purpose; to keep in view; not to lose from sight and observation; as, to watch the progress of a bill in the legislature.(verb)