amusing (adj.)youdaoicibaDictYouDict[amusing 词源字典]
c. 1600, "cheating;" present participle adjective from amuse (v.). Sense of "interesting" is from 1712; that of "pleasantly entertaining, tickling to the fancy" is from 1826. Noted late 1920s as a vogue word. Amusive has been tried in all senses since 18c. and might be useful, but it never caught on. Related: Amusingly.[amusing etymology, amusing origin, 英语词源]
housing (n.1)youdaoicibaDictYouDict
"buildings, lodgings," early 14c., husing, from the root of house (n.).
housing (n.2)youdaoicibaDictYouDict
"ornamental covering," c. 1300, houce "covering for the back and flanks of a horse," from Old French houce "mantle, horse-blanket" (Modern French housse), from Medieval Latin hultia "protective covering," from a Germanic source, from Proto-Germanic *hulfti (cognates: Middle Dutch hulfte "pocket for bow and arrow," Middle High German hulft "covering"), from PIE root *kel- (2) "to cover, conceal" (see cell). Sense of "case or enclosure for machine or part" is first recorded 1882.
musing (n.)youdaoicibaDictYouDict
late 14c., "complaint," verbal noun from muse (v.). Meaning "pondering" is from mid-15c. Related: Musingly; musings.