Princeton's WordNet

1. break, interruption, disruption, gap(noun)

   an act of delaying or interrupting the continuity

   Synonyms:
   disturbance, gap, commotion, jailbreak, respite, happy chance, crack, interruption, rift, intermission, break of serve, severance, falling out, prisonbreak, suspension, recess, faulting, breakout, flutter, hoo-hah, geological fault, hurly burly, spread, col, to-do, break, good luck, breaking, disruption, open frame, gaolbreak, dislocation, breach, breakage, perturbation, fault, pause, shift, fracture, time out, kerfuffle, opening, rupture, hoo-ha, prison-breaking

2. interruption, break(noun)

   some abrupt occurrence that interrupts an ongoing activity

   Synonyms:
   recess, good luck, rift, fault, prison-breaking, breakout, fracture, suspension, break of serve, happy chance, respite, geological fault, faulting, shift, interruption, time out, severance, pause, open frame, breach, breakage, disruption, jailbreak, gap, falling out, prisonbreak, breaking, intermission, rupture, gaolbreak, break

3. pause, intermission, break, interruption, suspension(noun)

   a time interval during which there is a temporary cessation of something

   Synonyms:
   prison-breaking, gap, jailbreak, respite, happy chance, interruption, rift, intermission, severance, gaolbreak, falling out, hanging, prisonbreak, suspension, recess, faulting, breakout, geological fault, break, good luck, breaking, disruption, reprieve, open frame, abatement, break of serve, hiatus, breach, breakage, abeyance, suspension system, fault, pause, shift, fracture, time out, temporary removal, rupture, dangling