1 definition by 2NMom

Top Definition
Being so in-sync with someone, you could be twins; alternatively defined: the moment when, in two separate places, twins do the same thing at the same time.
Abby and Lily were so twinsync, they readily completed one another's sentences.
by 2NMom August 18, 2011
Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.