(ornithology) The capercaillie, Tetrao urogallus.

(idiomatic, US) To take a customary action to ward off some misfortune that is believed to be attracted by a presumptuous statement.

(idiomatic, US) Hopefully; a self-directive to undertake the customary action to ward off bad luck.

(UK, Australia, South Africa, Malaysia, New Zealand, Singapore, India) To make contact with wood to avert bad luck, in accordance with a folk practice.

(idiomatic, UK, Australia, South Africa, New Zealand, India) Hopefully; said while touching something wooden, to avert superstitious bad luck from what has just been said.

The tree Brya ebenus / The wood from the tree, used for making flutes and other musical instruments

(biblical) The wood used in the construction of Noah's Ark - currently unidentified.

(botany) the vertical and usually axially arranged parenchyma of the xylem that is believed to function chiefly in carbohydrate storage

A skunk.

A white-flowered woodland plant, Oxalis acetosella. / Any of several other species of the genus Oxalis.