Definition of vail
: to lower often as a sign of respect or submission
Origin and Etymology of vail
Middle English valen, partly borrowed from Anglo-French valer (short for avaler “to lower”) & partly short for Middle English avalen “to let fall,” borrowed from Anglo-French avaler, verbal derivative of aval “downward,” from a “to” (going back to Latin ad) + val “valley” — more at 1at, vale
First Known Use: 14th century
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