Not really. Though I don't have my Japanese wordprocessor here to input the kanji, "irimi" is a compund of the verb "iru" to enter and "mi" or body.
It doesn't necessarily mean passing or passing behind. Not at all.
O.K. Don't have to repeat yourself, stay on line. Ha, ha. However, you can enter off line, (irimi) or in an arc(tai-sabaki) or walk straight into (sacrifice) (whatever that is in japanese martial lingo).
'When they attack I am already standing behind them' [quote]