conj. adv., and prep. Obs. [ALL- E 1 + WHAT, occas. used in south. dial. = what time, while, when.]
A. conj. adv. (with or without that) All the while, while, till.
c. 1314. Guy Warw., 81. Al what that cite y-nomen be.
c. 1315. Shoreham, 127. Al fram Crystes ascensioun, Al wat comth hyre assumpcioun.
1340. Ayenb., 132. Hy clifþ an heȝ alhuet þet hi come to perfeccion.
B. prep. Till, until.
1340. Ayenb., 26. Þet no man ne may his knawe alhuet þanne þet hi byþ uol wexe. Ibid., 52. He uesteþ alhuet niȝt.