cockyoudaoicibaDictYouDict[cock 词源字典]
cock: [OE] The word cock is probably ultimately of onomatopoeic origin, imitative of the male fowl’s call (like the lengthier English cock-adoodle- doo [16], French coquerico, and German kikeriki). Beyond that it is difficult to go with any certainty; it reflects similar words in other languages, such as medieval Latin coccus and Old Norse kokkr, but which if any the English word was borrowed from is not clear.

It has been suggested that it goes back to a Germanic base *kuk-, of which a variant was the source of chicken, but typical Old English spellings, such as kok and kokke, suggest that it may have been a foreign borrowing rather than a native Germanic word – perhaps pointing to Germanic coccus. The origin of the interconnected set of senses ‘spout, tap’, ‘hammer of a firearm’, and ‘penis’ is not known; it is possible that it represents an entirely different word, but the fact that German hahn ‘hen’ has the same meanings suggests otherwise.

Of derived words, cocker [19], as in ‘cocker spaniel’, comes from cocking, the sport of shooting woodcock, and cocky [18] is probably based on the notion of the cock as a spirited or swaggering bird, lording it over his hens (there may well be some connection with cock ‘penis’, too, for there is an isolated record of cocky meaning ‘lecherous’ in the 16th century). Cockerel [15] was originally a diminutive form.
=> chicken, cocky[cock etymology, cock origin, 英语词源]
lullyoudaoicibaDictYouDict
lull: [14] There are several words similar to lull in various Germanic languages, including Swedish lulla ‘lull’ and Dutch lullen ‘prattle’, but it is not clear to what extent they are interconnected. But either individually or collectively they all no doubt go back ultimately to a repitition of the syllable lu or la, used in singing a baby to sleep. Lullaby was coined from lull in the 16th century, perhaps using the final syllable of goodbye.
interconnect (v.)youdaoicibaDictYouDict
1863, from inter- + connect. Related: Interconnected; interconnecting; interconnectedness; interconnection.
network (n.)youdaoicibaDictYouDict
"net-like arrangement of threads, wires, etc.," 1550s, from net (n.) + work (n.). Extended sense of "any complex, interlocking system" is from 1839 (originally in reference to transport by rivers, canals, and railways). Meaning "broadcasting system of multiple transmitters" is from 1914; sense of "interconnected group of people" is from 1947.