WordNet

sing with closed lips; "She hummed a melody"
a humming noise; "the hum of distant traffic" (同)humming
be noisy with activity; "This office is buzzing with activity" (同)buzz, seethe
sound with a monotonous hum (同)thrum
make a low continuous sound; "The refrigerator is humming"
relating to a person; "the experiment was conducted on 6 monkeys and 2 human subjects"
characteristic of humanity; "human nature"
having human form or attributes as opposed to those of animals or divine beings; "human beings"; "the human body"; "human kindness"; "human frailty"

PrepTutorEJDIC

〈ハチ・機械などが〉『ブンブンいう』,ブーンと鳴る / 『鼻歌を歌う』,ハミングスル / (ちゅうちょ・当惑で)ふむふむいう / 《話》〈雰囲気・事業などが〉活気がある,活発に動く;(…で)活気づく《+『with』+『名』》 / …‘を'『ハミングで歌う』,鼻歌を歌って…‘を'(ある状熊に)する / (ハチ・機械などの)『ブンブン』[『うなる音』];鼻歌 / (雑踏などの)ガヤガヤ]いう音],騒音 / ふ‐む,う‐ん(ちゅうちょ・当惑・黙考・疑惑・不快などの声)
(動物・神に対して)『人間の』,人の / 『人間らいし』,人間的な,人情味のある / 〈C〉《複数形》(動物に怠して)人間(human being) / 〈U〉《the human》人類