Obs. rare. [Some kind of corrupted form of bitumen: cf. It. bitume.] Bitumen.
c. 1300. K. Alis., 4763. Pilers of brass and botemeys. Ibid., 6189. Above, and byneothe, is heore heolyng, With botemay, that wol clyng, That no water, salt no cler, Heom to derye hath no power.
