The OED puts it best: “A wooden head, a wooden block for hats or wigs; hence, a head with no more intelligence in it than one of these, a blockish head.”

《牛津英语词典》的解释最恰当：“一个木制的头，戴帽子或假发的木头，因此，这种脑袋中放不下才智，含义为愚蠢的人。”

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Birdlike, he retired at dusk, lying on the bare floor with a wooden block under his head like a pillow.

他像小鸟一样，黄昏就寝，用木板作枕头，躺在光秃秃的地板上。

youdao

Albert is seen being struck on the head by a boy in a purple shirt who hits him from behind with a long wooden board, thought to be a part of a railway sleeper.

看到阿尔伯特被一个穿紫色衬衫的男孩拿着像是枕木的一部分的长木板从他的后面击中脑部。

youdao

We see Albert being hit on the head by another boy from behind with a long wooden board later identified by authorities as a splintered railroad tie.

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Driven by a key-wound spring, the monk walks in a square, striking his chest with his right arm, raising and lowering a small wooden cross and rosary in his left hand, turning and nodding his head, rolling his eyes, and mouthing silent obsequies.

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