From Wiktionary, the free dictionary
rain cloud (plural rain clouds )
A cloud from which rain is falling or may fall.
1936 , F.J. Thwaites , chapter XXII, in The Redemption , Sydney: H. John Edwards, published 1940 , page 214 :Between the grey mist of rainclouds the sun suddenly appeared to mottle the wet asphalt of Marble Arch in patches of silver and ebony.
1947 January and February, O. S. Nock, “"The Aberdonian" in Wartime”, in Railway Magazine , page 7:During this fine run through Fife the weather had deteriorated rapidly, and as we passed Wormit and came onto the Tay Bridge heavy rain clouds were piled over the sea.
cloud from which rain is falling
Altai:
Southern Altai: јаҥмырлу булут ( ǰaŋmïrlu bulut )
Arabic: مُزْنَة f ( muzna )
Belarusian: дажджавая хмара ( daždžavaja xmara )
Bulgarian: дъждовен облак m ( dǎždoven oblak )
Burmese: မိုးတိမ်တိုက် (my) ( mui:timtuik ) , မိုးသား (my) ( mui:sa: )
Catalan: nimbus (ca) m , núvol plugisser m
Chinese:
Mandarin: 雨雲 / 雨云 (zh) ( yǔyún )
Dutch: regenwolk (nl) f , nimbuswolk f
Dzongkha: ཆར་སྤྲིན ( char sprin )
Esperanto: pluvnubo
Finnish: sadepilvi
French: nimbus (fr)
Frisian:
North Frisian: ( Föhr-Amrum ) swark n
Georgian: საწვიმარი ღრუბელი ( sac̣vimari ɣrubeli )
German: Regenwolke (de) f , Nimbus (de) , Schleierwolke f
Hungarian: esőfelhő (hu) , nimbusz (hu) , nimbuszfelhő
Icelandic: regnský (is) n , úrkomuský n , regnþykkni (is) n
Ilocano: kuyemyem
Indonesian: mendung (id) , awan hitam (id)
Ingrian: tuuca
Irish: scamall báistí m
Istriot: nenbo m
Italian: nuvola (it) f , nube (it) f , nembo (it) m
Japanese: 雨雲 (ja) ( あまぐも , amagumo)
Kalinga:
Lubuagan Kalinga: libuu , bulot
Korean: 비구름 (ko) ( bigureum )
Latin: nimbus (la) m
Luxembourgish: Reewollek f
Macedonian: дождовен облак m ( doždoven oblak )
Māori: okewa
Norwegian:
Bokmål: regnsky m or f
Nynorsk: regnsky f
Persian: مزنه ( mozne )
Pitjantjatjara: ngangkaḻi
Polish: chmura deszczowa f
Portuguese: nimbo (pt)
Russian: дождевая ту́ча ( doždevaja túča ) , дождево́е о́блако n ( doždevóje óblako )
Sorbian:
Lower Sorbian: mrokawa m , mrok m
Spanish: nimbo (es) m
Swedish: regnmoln (sv) n
Tagalog: dagim
Tamil: கார்மேகம் (ta) ( kārmēkam ) , மழை மேகம் ( maḻai mēkam )
Tibetan: ཆར་སྤྲིན ( char sprin )
Turkish: yağmur bulutu (tr)
Venetan: nenbo m
Vietnamese: mây mưa (vi)
Volapük: reinalefog