interstice

1 a break in continuity there's an occasional interstice in the tedium, but most of the novel is boring Synonyms discontinuity, hiatus, hiccup (also hiccough), interim, interlude, intermission, interregnum, interruption, gap, interval, parenthesisRelated Words caesura, comma, interspace, lag, pause, space, time lag, window; entr'acte; bumper; adjournment, discontinuance, lapse, suspension; lull, recess, respite, rest; subintervalNear Antonyms continuum, run, stretch; procession, progressionAntonyms continuation, continuity

2 an open space in a barrier (as a wall or hedge) pesky weeds growing in the interstices between the flagstones Synonyms breach, break, discontinuity, gulf, hiatus, hole, gap, interval, opening, rent, rift, separation, voidRelated Words chink, cleft, crack, cranny, crevice, fissure; notch, slit, slot, split; interspace, pore; abyss, aperture, cavity, chasm, gape, orifice; fracture, rupture, severance, sundering