adj 1. inseparable. May also mean that one person is the leader and the other is the sidekick. ("Those two are so Batman and Robin.") Submitted by Emily Marcroft, UC Berkeley, CA, USA, 01-13-1998. inseparable duo
BATMAN AND ROBIN
Meaning of BATMAN AND ROBIN in English
Slang English vocab. Английский сленговый словарь. 2012