casquer

Etymology 1
From. Sense 2 is a development of sense 1.

Verb

 * 1)  to fall into a trap, particularly by paying money in advance
 * 2)  to cough up, stump up, fork out, shell out

Etymology 2
From, perhaps influenced by an analysis of (which predates casquer) as a past participle.

Verb

 * 1)  to cover with (something resembling) a helmet
 * 2)  to put on (something resembling) a helmet