Interval /(?)/

In·ter·val

Interval

n.
  1. A space between things; a void space intervening between any two objects; as, an interval between two houses or hills.
    'Twixt host and host but narrow space was left, A dreadful interval.
  2. Space of time between any two points or events; as, the interval between the death of Charles I. of England, and the accession of Charles II.
  3. A brief space of time between the recurrence of similar conditions or states; as, the interval between paroxysms of pain; intervals of sanity or delirium.
  4. Difference in pitch between any two tones. (Mus.)

Phrases & Compounds
At intervals
coming or happening with intervals between; now and then.
Augmented interval
an interval increased by half a step or half a tone.

Interval

n.
  1. A tract of low ground between hills, or along the banks of a stream, usually alluvial land, enriched by the overflowings of the river, or by fertilizing deposits of earth from the adjacent hills. Cf. Bottom, n., 7. [Local, U. S.]
    The woody intervale just beyond the marshy land.