windsock

As nouns the difference between windsock and anemometer

is that windsock is a large, conical, open-ended tube designed to indicate wind direction and relative wind speed, used especially at smaller airfields while anemometer is an instrument for measuring and recording the speed of the wind.

Windcock is often a misspelling of windsock.

Windcock has no English definition.

As a noun windsock is

a large, conical, open-ended tube designed to indicate wind direction and relative wind speed, used especially at smaller airfields.