hazelyoudaoicibaDictYouDict
hazel: [OE] Hazel is a very ancient tree-name. It can be traced right back to Indo-European *kosolos or *koselos, which also produced French coudrier and Welsh collen. Its Germanic descendant was *khasalaz, from which come German hasel, Dutch hazel-, and Swedish and Danish hassel as well as English hazel. The earliest known use of the word to describe the colour of eyes comes in Shakespeare’s Romeo and Juliet 1592: ‘Thou wilt quarrel with a man for cracking nuts, having no other reason, but thou hast hazel eyes’.
cozy (adj.)youdaoicibaDictYouDict
1709, colsie, Scottish dialect, perhaps of Scandinavian origin (compare Norwegian kose seg "be cozy"). In Britain, usually cosy. Related: Cozily; coziness.
hazel (n.)youdaoicibaDictYouDict
Old English hæsl, hæsel, from Proto-Germanic *hasalaz (cognates: Old Norse hasl, Middle Dutch hasel, German hasel), from PIE *koselo- "hazel" (cognates: Latin corulus, Old Irish coll "hazel"). Shakespeare ("Romeo and Juliet," 1592) was first to use it (in print) in the sense of "reddish-brown color of eyes" (in reference to the color of ripe hazel-nuts), when Mercutio accuses Benvolio:
Thou wilt quarrell with a man for cracking Nuts, hauing no reason, but because thou hast hasell eyes.
actinomycosisyoudaoicibaDictYouDict
"Disease caused by bacteria of the genus Actinomyces in cattle, other animals, or humans, typically characterized by the formation of nodular suppurating abscesses, most commonly in the region of the head and neck; an instance or type of this", Late 19th cent.; earliest use found in The Nineteenth Century. From actino- + mycosis, after German Actinomykose.