Correct spelling for the English word "lunchhook" is [lˈʌnt͡ʃhʊk], [lˈʌntʃhʊk], [l_ˈʌ_n_tʃ_h_ʊ_k] (IPA phonetic alphabet).
The word "lunchhook" is an informal term that originated in the United States during the mid-19th century. It is a compound word combining "lunch" and "hook".
The term "lunch" itself comes from the old English word "nuncheon" or "nonchen", which meant a light meal taken in the afternoon. Over time, "nuncheon" transformed into "lunch", referring to a midday meal.
The word "hook" has its roots in Old English as well, where "hoc" meant a hook or a curve. In this context, "hook" refers to the act of snaring or captivating someone's attention or interest.