collabasco
Could not find conlabascunt in Logeion dictionaries.
conlabascunt present active indicative 3rd plural of collabasco
col-lăbasco (conl-), ĕre,
- v. n., to totter or be about to fall at the same time, to waver with, etc.; trop.: si res lassa labat, itidem amici collabascunt, Plaut. Stich. 4, 1, 17 (521).
col-labāsco, ere (con u. labasco), fallen wollen, wanken, im Bilde, si res laxe labat, itidem amici collabascunt, Plaut. Stich. 522.
collăbāscō (conl-), ĕre, intr., menacer ruine : Pl. St. 522.