Interval

in'tgr-val, n. A space between things; space of time between events, or between 2 paroxysms of disease, pain, or delirium. (Mus.) Difference in pitch between any 2 tones. A fertile tract of low or plain ground between hills, or along the banks of rivers. [In this sense written also intervale.'] [F. tntervalle,L. intervallum, fr. inter and vallum, a rampart; wall.]