One of the mysteries of the English language finally explained.
An arquebus with a hook under the barrel.Related hackbut of croc
Late 16th century. Apparently ultimately from Middle French harquebuze a crocq, harquebouse a croc from arquebuse + à at, to + crocq, croq, croc hook.
arquebus à croc/ˌɑːkwɪbəs ɑː ˈkrɒk/
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