dogvane

[dawg-veyn, dog-] /ˈdɔgˌveɪn, ˈdɒg-/
noun, Nautical
1.
a small vane that shows the direction of the wind, mounted in a position visible to a helmsman.
Origin
1760-70; dog + vane
British Dictionary definitions for dogvane

dogvane

/ˈdɒɡˌveɪn/
noun
1.
(nautical) a light windvane consisting of a feather or a piece of cloth or yarn mounted on the side of a vessel Also called telltale