低音大號

bass tuba / euphonium

low / beneath / to lower (one's head) / to let droop / to hang down / to incline

bass

sound / noise / note (of musical scale) / tone / news / syllable / reading (phonetic value of a character)

see 大夫[dai4 fu5]

big; large; great / older (than another person) / eldest (as in 大姐[da4 jie3]) / greatly; freely; fully / (dialect) father / (dialect) uncle (father's brother)

tuba / large size (clothes, print etc) / (polite) (your) name / (coll.) number two / to defecate

roar / cry / CL:個|个[ge4]

ordinal number / day of a month / mark / sign / business establishment / size / ship suffix / horn (wind instrument) / bugle call / assumed name / to take a pulse / classifier used to indicate number of people