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Noun: foster-sister
  1. Your foster sister is a female who is not a daughter of your parents but who is raised by your parents
    - foster sister

Derived forms: foster-sisters

Type of: female, female person

Nearest

fosterage
foster-brother
foster-child
foster-daughter
foster-father
fostering
fosterling
foster-mother
foster-nurse
foster-parent
foster-sister
foster-son
fothergilla
Fothergilla
FOTS
Foucault
Foucault pendulum
foul
foul ball
foul language
foul line