foreach ($this->get("DB")->result as $ct){
$contentTexts[$ct["langCode"]][$ct["wordCode"]] = $ct["wordText"]; //$contentTexts is a two dimensional array
}

$this->set("contentTexts",$contentTexts); // $contentTexts is an array described above
$this->set("lwMetaTitle",$content->lwMetaTitle);

<F3:repeat group="{{@contentTexts} }" key="{{@langCode}}" value="{{@ctext}}" counter="{{@counter}}">

{{@ctext[@lwMetaTitle]}}

</F3:repeat>

{{@ctext[@lwMetaTitle]}}

{{var_dump(@ctext[@lwMetaTitle])}}