? Overthrow, fallen mass. (But in the passage quoted the Ellesmere and two other MSS. have tas heap.)
c. 1386. Chaucer, Knt.s T., 147 (Harl., Corpus, Petw., Lansd.). To ransake in the caas of þe bodies dede [so ll. 151, 162; here Harl. has chaas].