twinpair

noun
UK /ˈtwɪn.peə/
US /ˈtwɪn.per/

Two children who were born at the same time to the same mother.

The twinpair wore matching red coats to school.


OTHER MEANINGS

2. Two things that are exactly alike and used together.

She bought a twinpair of lamps for the bedroom.

3. Two people who look or act very much the same.

The coaches called the two fast runners a twinpair.

4. A set of two matching items sold as one unit.

He packed a twinpair of socks for the trip.