Un-lúcan

According to the Old English Dictionary:

un-lúcan

p. -leác To unclose, open :-- Godes engel unleác ðæt cweartern, Homl. Skt. ii. 25, 839. Hostiarius is ðære cyrcean durewerd, se sceal ða cyrcan unlúcan geleáffullum mannum, and ðám ungeleáffullum belúcan wiðútan, L. Ælfc. C. 11; Th. ii, 346, 29. Nán man ne dorste ða duru unlúcan, Homl. Ass. 113, 360. un-lucan