sister

B2 · Upper Intermediate Countable noun Medicine British English

n. a senior or head nurse in a hospital.

n. a senior female nurse, especially one in charge of a hospital ward.

“The ward sister checked the patient's charts during her morning rounds.”

“After twenty years of service, she was promoted to sister, taking full responsibility for the surgical recovery unit.”

B1 · Intermediate Countable noun Religion Formal

n. a woman who belongs to a religious group, like a nun.

n. a female member of a religious order or community.

日本語:シスター※

“Sister Mary has lived and worked at the convent for forty years.”

“The sisters of the local abbey are well-known for their extensive charitable work within the impoverished urban districts.”

B2 · Upper Intermediate Countable noun

n. a woman you feel a strong connection with because of shared goals or identity.

n. a woman who shares a common interest, race, or membership in an organization with others.

“She called her fellow activists sisters in the fight for equal rights.”

“The organization aims to empower sisters from all walks of life to pursue leadership roles in the technology sector.”

B2 · Upper Intermediate Countable noun

n. a thing that is closely related to another, like two similar cities.

n. an entity, such as a company or city, that has a close relationship with another.

“Oxford is a sister city to several other university towns around the world.”

“The two sister companies shared a headquarters but operated in entirely different market segments to avoid internal competition.”

C2 · Proficiency Technical

v. to make a wooden beam stronger by attaching another one next to it.

v. to strengthen a structural member by fastening a second similar member alongside it.

“The builder had to sister the floor joists to support the new bathtub.”

“To rectify the sagging ceiling, the contractor decided to sister the existing rafters with new pressure-treated lumber.”