sister
Pluralsisters
Pluralsisters
Formssisters, sistering, sistered
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- 2
- 3A woman or girl linked to others by shared gender, race, beliefs, work, or community.
She called every woman at the march her sister.
We may not be related, but those women are my sisters.
Note
- 4
Less common meanings
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- 6A senior nurse who supervises the others, usually on a hospital ward.
Like a team leader who is in charge of the other nurses.
The sister checked on every patient before the night shift.
Ask the ward sister if you need more pain relief.
UsageIt is also a title used before a name: Sister Jones.
Note
- 7To make a beam stronger by attaching a second beam beside it.
Like taping a second ruler to a bent one so it does not snap.
The builders sistered the cracked joist with a fresh board.
You can sister a weak beam to stop the floor from sagging.
Similarreinforce
Note
- 8To be like a sister to something, or to look very much like it.
Deep clerks she dumbs; and with her needle composes Nature's own shape, of bud, bird, branch, or berry, That even her art sisters the natural roses; Her inkle, silk, twin with the rubied cherry
c. 1607, William Shakespeare, [George Wilkins?]Here, sisters means looks very much like, as close as a sister.Note
- 9In a tree of data, a piece that shares the same parent as another piece.
- 10One of two tornadoes that form close together, at the same time or one soon after the other.
- 11A kind of butterfly from the group called Adelpha, found in North and South America.
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Origin
It comes from Old English words like 'sweostor', meaning sister. The 'i' spelling came from Old Norse 'systir'.
Checked 1 Nov 2026 · 3 facts
- English 'sister' derives from Old English 'sweostor'. en.wiktionary.org
- Old English 'sweostor' means 'sister'. en.wiktionary.org
- The form with 'i' reflects influence from Old Norse 'systir'. en.wiktionary.org