drowsyyoudaoicibaDictYouDict[drowsy 词源字典]
drowsy: [15] The etymological notion underlying drowsy seems to be of heaviness, with eyelids falling and the head nodding over the chest. The word probably comes from a Germanic base *drūs-, which also produced drūsian, an Old English verb meaning ‘be slow and sleepy’ which did not survive into the Middle English period (modern English drowse [16] is a back-formation from drowsy). A variant of this base is the possible source of English dreary and drizzle.
=> dream, drizzle[drowsy etymology, drowsy origin, 英语词源]
innuendoyoudaoicibaDictYouDict
innuendo: [17] An innuendo was originally a hint given with a ‘nod’ or a wink. The word is a derivative of Latin innuere ‘signal to by means of a nod’, a compound verb formed from in- ‘towards’ and nuere ‘nod’. The ablative case of its gerund, innuendō ‘by nodding’, was used in medieval legal documents as the equivalent of ‘that is to say, i.e’. In particular, it introduced the derogatory meaning claimed by the plaintiff in a libel case to be contained in or implied by a statement, and this formed the basis for its metaphorical transference to any ‘oblique derogatory implication’.
nod (v.)youdaoicibaDictYouDict
"to quickly bow the head," late 14c., of unknown origin, probably an Old English word, but not recorded; perhaps related to Old High German hnoton "to shake," from Proto-Germanic *hnudan. Meaning "to drift in and out of consciousness while on drugs" is attested from 1968. Related: Nodded; nodding. A nodding acquaintance (1711) is one you know just well enough to greet with a nod.
numinous (adj.)youdaoicibaDictYouDict
"divine, spiritual," 1640s, from Latin numen (genitive numinis) "divine will," properly "divine approval expressed by nodding the head," from nuere "to nod," from PIE *neu- "to nod" (cognates: Greek neuein "to nod") + -ous.
nutation (n.)youdaoicibaDictYouDict
1610s, "action of nodding," from Latin nutationem (nominative nutatio), noun of action from past participle stem of nutare "to nod," from PIE *neu- "to nod" (see numinous). Astronomical use is from 1715. Related: Nutational.
nystagmus (n.)youdaoicibaDictYouDict
medical Latin, from Greek nystagmos "nodding, drowsiness," from nystazein "to nod, be sleepy," from PIE *sneud(h)- "to be sleepy."