HABERGEON.
What a pity, Cunliffe!
You were SO CLOSE to the correct answer.
But, unfortunately, your Geometry let you down. A �Rhombus �, as every schoolboy knows, is an Italian vehicle, with six flat tyres.
The TRUE definition of �Habergeon � derives from the ancient Scandiwegian Language, Norse.
Shakespeare was familiar with the language: "A Norse, a Norse! my kingdom for a Norse!"
A Norsious translation of �Habergeon � is:
�Hab � = The Imperative Interrogative �Have you? �; �er � = The unstressed, schwa-like, Indefinite Determiner �a �; and �geon � = derived from Early American Norse, �john � (Toilet).
"Have you a toilet?"
So, Lynne Cunliffe, your poor hapless individual, is a traveller hurriedly seeking a convenient toilet ... hence the word �Convenience �.
Incidentally:
"It takes Allsorts to make a packet of Bassetts!"
Les Douglas