thirling

== English == === Etymology 1 === From Middle English thurlunge, from Old English þȳrlung (“piercing”), verbal noun of þȳrlian (“to pierce”). Equivalent to thirl +‎ -ing. ==== Alternative forms ==== thurling ==== Noun ==== thirling (plural thirlings) The act of boring or perforating (coal-mining) Same as thirl (Northern England, mining) In lead-mining, a mark indicating the termination of a set or pitch === Etymology 2 === From thirl. ==== Verb ==== thirling present participle and gerund of thirl