WordNet

primarily temporal sense; being or indicating a relatively great or greater than average duration or passage of time or a duration as specified; "a long life"; "a long boring speech"; "a long time"; "a long friendship"; "a long game"; "long ago"; "an hour long"
(of speech sounds or syllables) of relatively long duration; "the English vowel sounds in `bate, `beat, `bite, `boat, `boot are long"
for an extended distance
for an extended time or at a distant time; "a promotion long overdue"; "something long hoped for"; "his name has long been forgotten"; "talked all night long"; "how long will you be gone?"; "arrived long before he was expected"; "it is long after your bedtime"
having or being more than normal or necessary:"long on brains"; "in long supply"
holding securities or commodities in expectation of a rise in prices; "is long on coffee"; "a long position in gold"
involving substantial risk; "long odds"
of relatively great height; "a race of long gaunt men"- Sherwood Anderson; "looked out the long French windows"
primarily spatial sense; of relatively great or greater than average spatial extension or extension as specified; "a long road"; "a long distance"; "contained many long words"; "ten miles long"
prolonged unfulfilled desire or need (同)yearning, hungriness
Italian architect who pioneered in the use of reinforced concrete (1891-1979) (同)Pier Luigi Nervi

PrepTutorEJDIC

(距離・物の長さが)『長い』 / (時間が)『長い』,長く続く / 《時間・距離などを表離などを表す語を伴って》長さが…の / 『長々しい』,あきあきする / (数量が標準よりも)『多い』,長い / (人が)やせてひょろ長い / 長く,長い間,久しく / …じゅう / ずっと(前に,後に) / 長い間
『熱望する』
『あこがれ』,熱望 / (目の表情などが)あこがれの,熱望している