1540s, "metaphor, parable" (a sense now obsolete); 1550s, "word-play, joke;" 1610s as "passing or casual reference," from Latin allusionem (nominative allusio) "a playing with, a reference to," noun of action from past-participle stem of alludere "to play, jest, make fun of," from ad "to" (see ad-) + ludere "to play" (see ludicrous). An allusion is never an outright or explicit mention of the person or thing the speaker seems to have in mind.
"cheap car," later (after 1914) especially "Model-T Ford," by 1905, of uncertain origin. The word flivver was noted c. 1910 as a new theater slang word come into common use: "A flivver is something that is not a success, perhaps not an outright, hideous failure, but certainly a long way from the top." [Boston Globe, Feb. 20, 1910] A character in a comical column from The Philadelphia Inquirer of Aug. 16, 1909, says it is "... from the verb 'to fliv,' meaning a foul, a bungled miss."
It is rare in Old English and Middle English, where full was much more commonly attached at the head of a word (for example Old English fulbrecan "to violate," fulslean "to kill outright," fulripod "mature;" Middle English had ful-comen "attain (a state), realize (a truth)," ful-lasting "durability," ful-thriven "complete, perfect," etc.).