Gros pantalons, en oubykh et en français

Good evening all - just a quick question for native speakers of French: what kind of pants would you understand to be meant by the phrase gros pantalon? It's given in one of the texts I'm working with as a French gloss of the Ubykh word pʃɜɬɜʈʂ’ɜ́ʁɜ, but unfortunately doesn't have any supporting context.

Merci d'avance / ɐnʨʷ’ɨχɜwnɨ Wɜn ɕʷɨʃʷɜq’ɨnɐχ!