Here's a high-class clue: it's the last word in the kid's rhyme that begins, "I see London, I see France..."
Here's one of the rhymes I just sent to 
the site's creator: .... A boy began to whistle - he whistled up a tune [DOC] [TLE] author interview  Books Are Cool [PAR] I See London, I See France by Paulita Kincer: a novel about travel, self-fulfilment 
... meaningful because my son Tucker took it on a class trip to France last year.