Grantaire's etymology gets a laugh from Feuilly, though no particular answer comes to mind. Clearly they need to retrieve Bossuet and Joly, to help keep up with the wordplay.

He pauses with the hand on the gate, looking up at the carved triangle while Enjolras tries his watch. "Do you think the bar made this? Or was it here before...?" The question is directed more or less at Bahorel--or at any of them.