1. (n.)halo something suggesting such a light or shape.
2. halo any of a variety of bright circles or arcs centered on the sun or moon, caused by the refraction or reflection of light by ice crystals suspended in the earth's atmosphere
Etymology: (1555–65; < L, acc. of halōs circle round sun or moon < Gk hálōs orig., disk, threshing floor)
Definition of 'Halo'
Princeton's WordNet
1. (noun)aura, aureole, halo, nimbus, glory, gloriole an indication of radiant light drawn around the head of a saint
2. (noun)ring, halo, annulus, doughnut, anchor ring a toroidal shape "a ring of ships in the harbor"; "a halo of smoke"
3. (noun)halo a circle of light around the sun or moon
Definition of 'Halo'
Webster Dictionary
1. (noun)Halo a luminous circle, usually prismatically colored, round the sun or moon, and supposed to be caused by the refraction of light through crystals of ice in the atmosphere. Connected with halos there are often white bands, crosses, or arches, resulting from the same atmospheric conditions
2. (noun)Halo a circle of light; especially, the bright ring represented in painting as surrounding the heads of saints and other holy persons; a glory; a nimbus
Definitions of Halo 
Afrikaans: ligkrans, halo
Arabic: هالَة الشَّمس أو القَمَر
Bulgarian: ареола
Brazilian: halo
Czech: světelný kruh kolem slunc
German: der Hof
Danish: korona; lysring
Greek: άλως (γύρω από το φεγγάρι
Spanish: halo
Estonian: halo
Farsi: هاله
Finnish: valokehä
French: halo
Hebrew: הִילָה
Hindi: आभा मण्डल
Croatian: kolut oko Sunca i Mjeseca
Hungarian: (nap)gyűrű; fényudvar
Indonesian: lingkaran cahaya
Icelandic: rosabaugur
Italian: alone
Japanese: かさ
Korean: (해, 달의 주위에 나타나는) 무리
Lithuanian: ratilas (aplink saulę ar 
Latvian: (Saules, Mēness) apdārzs
Malay: halo
Dutch: stralenkrans
Norwegian: sol-/månering
Polish: otoczka, pierścień
Persian: هاله
Pashto: شپول ( دسپوږمۍلمر)، تربل 
Portuguese: halo
Romanian: nimb
Russian: гало
Slovak: halo, kruh (okolo Slnka a
Slovenian: obstret
Serbian: korona
Swedish: sol-, mångård
Thai: ทรงกลด
Turkish: hale, ayla
Taiwanese: 日月的光環
Ukrainian: гало; сяючий круг
Urdu: ہالئہ نور
Vietnamese: quầng (mặt trăng; mặt trờ
Chinese: （环绕日月的）晕轮，光环
