dreamer (n.)youdaoicibaDictYouDict[dreamer 词源字典]
c. 1300, "one who dreams," agent noun from dream (v.). Meaning "idler, daydreamer" emerged by 1530s. Old English dreamere meant "musician."[dreamer etymology, dreamer origin, 英语词源]
dreamland (n.)youdaoicibaDictYouDict
1834, from dream (n.) + land (n.).
dreamless (adj.)youdaoicibaDictYouDict
c. 1600, from dream (n.) + -less. Old English dreamleas meant "joyless." Related: Dreamlessly; dreamlessness.
dreamscape (n.)youdaoicibaDictYouDict
1959, from dream + second element abstracted from landscape, etc. First attested in a Sylvia Plath poem.
dreamtyoudaoicibaDictYouDict
alternative past tense and past participle of dream (v.).
dreamy (adj.)youdaoicibaDictYouDict
1560s, "full of dreams," from dream + -y (2). Meaning "perfect, ideal," attested from 1941, American English teen slang. Compare dreamboat "romantically desirable person;" dream girl (1903).
drear (adj.)youdaoicibaDictYouDict
1620s, poetic shortening of dreary.
dreariness (n.)youdaoicibaDictYouDict
Old English dreorinysse; see dreary + -ness.
dreary (adj.)youdaoicibaDictYouDict
Old English dreorig "sad, sorrowful," originally "cruel, bloody, blood-stained," from dreor "gore, blood," from (ge)dreosan (past participle droren) "fall, decline, fail," from Proto-Germanic *dreuzas (cognates: Old Norse dreyrigr "gory, bloody," and more remotely, German traurig "sad, sorrowful"), from PIE root *dhreu- "to fall, flow, drip, droop" (see drip (v.)).

The word has lost its original sense of "dripping blood." Sense of "dismal, gloomy" first recorded 1667 in "Paradise Lost," but Old English had a related verb drysmian "become gloomy."
dreck (n.)youdaoicibaDictYouDict
"filth, trash," 1922, from Yiddish drek (German dreck), from Middle High German drec, from Proto-Germanic *threkka (cognates: Old English þreax "rubbish," Old Frisian threkk), perhaps connected to Greek skatos "dung," Latin stercus "excrement," from PIE root *(s)ker- "to cut" (see shear (v.)).
dredge (n.)youdaoicibaDictYouDict
late 15c., in Scottish dreg-boat "boat for dredging," perhaps ultimately from root of drag (possibly via Middle Dutch dregghe "drag-net"). The verb is attested from c. 1500 in Scottish. Related: Dredged; dredging.
dredger (n.)youdaoicibaDictYouDict
c. 1500, agent noun from dredge (v.).
dree (v.)youdaoicibaDictYouDict
Old English dreogan "to work, suffer, endure;" see drudge. Cognate of Old Norse drygjado "carry out, accomplish," Gothic driugan "serve as a soldier."
dreg (n.)youdaoicibaDictYouDict
see dregs.
dregs (n.)youdaoicibaDictYouDict
c. 1300 (implied in surname Dryngedregges), from Old Norse dregg "sediment," from Proto-Germanic *drag- (cognates: Old High German trestir, German Trester "grapeskins, husks"), from PIE *dher- (1) "to make muddy." Replaced Old English cognate dræst, dærst "dregs, lees." Figurative use is from 1530s.
drekyoudaoicibaDictYouDict
see dreck.
drench (v.)youdaoicibaDictYouDict
c. 1200, "to submerge, drown," from Old English drencan "give drink to, ply with drink, make drunk; soak, saturate; submerge, drown," causative of drincan "to drink" (see drink), from Proto-Germanic *drankijan (cognates: Old Norse drekkja, Swedish dränka, Dutch drenken, German tränken, Gothic dragkjan "to give to drink"). Sense of "to wet thoroughly by throwing liquid over" is from c. 1550. Related: Drenched; drenching.
dress (v.)youdaoicibaDictYouDict
early 14c., "make straight; direct, guide, control, prepare for cooking," from Old French dresser, drecier "raise (oneself), address, prepare, lift, raise, hoist, set up, arrange, set (a table), serve (food), straighten, put right, direct," from Vulgar Latin *directiare, from Latin directus "direct, straight" (see direct (v.)).

Sense of "decorate, adorn" is late 14c., as is that of "put on clothing." Original sense survives in military meaning "align columns of troops." Dress up "attire elaborately" is from 1670s; dressing down "wearing clothes less formal than expected" is from 1960. To dress (someone) down (1769) is ironical. Related: Dressed; dressing.
dress (n.)youdaoicibaDictYouDict
c. 1600, originally any clothing, especially that appropriate to rank or to some ceremony; sense of "woman's garment" is first recorded 1630s, with overtones of "made not merely to clothe but to adorn." Dress rehearsal first recorded 1828.
dressage (n.)youdaoicibaDictYouDict
1936, from French dressage, from dresser "to train, drill" (see dress (v.)). Middle English had dress (v.) in the sense of "to train or break in" a horse or other animal (c. 1400), but it died out.