A child, conceived by selected IVF treatment, so as to have compatible tissue that could be used to treat an existing sick brother or sister

The quality of being sibilant: a hissing quality.

A rust-colored weasel, Mustela sibirica, used for its fur.

plural of sibilance

(uncountable) The quality of being sibilate / (countable) sibilation

plural of sibility

plural of Siberian Husky

(rare) One's spouse's sibling's spouse; either of two (or more) people who marry siblings, from the perspective of the other.

plural of Siberian jay

A jay widespread in northern Eurasia, Perisoreus infaustus