bécane

bike, bicycle; motorbike; 'puter, computer

“«[…]Nous y sommes allés par le tram et je comprends que ça ne vous amuse pas de prendre un tacot pareil! nous avons mis deux heures! J'aurais fait trois fois l'aller et retour avec ma bécane.»” — " […] We went there by tram and I understand why one cannot enjoy taking such a slow line! It took us two hours! In that time, I could have gone and come back three times with my bicycle."

Uncertain, suggested to be from the argot word bécant, ultimately from bec, the implication being that the squeaking of an old bicycle resembles the chirping of a bird.