'En route' definitions:
Definition of 'en route'
(from WordNet)
adverb
On a route to some place; "help is on the way"; "we saw him on the way to California" [syn: on the way, en route]
Definition of 'En route'
From: GCIDE
- En route \En` route"\ [F.] On the way or road. [1913 Webster]