| 单词 | sister | 
| 释义 | Word Frequency sister(ˈsɪstə) noun 1.  a female person having the same parents as another person 2.  half-sister,  stepsister  3.  a female person who belongs to the same group, trade union, etc, as another or others 4.  informal a form of address to a woman or girl, used esp by Black people in the US 5.  a senior nurse  6. mainly Roman Catholic Church a nun or a title given to a nun 7.  a woman fellow member of a Church or religious body 8. (modifier) belonging to the same class, fleet, etc, as another or others  a sister ship 9. (modifier) biology  denoting any of the cells or cell components formed by division of a parent cell or cell component  sister nuclei Word originOld English sweostor; related to Old Norse systir, Old High German swester, Gothic swistar | 
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