blát
This might be just a supplemental entry substituting part of an entry in the Main Volume.
In the OE text, the length is:indicated by acute accentsindicated by macronsnot indicated.
blát
Substitute for first passage Þá cwom wópes hring blát út faran, weóll waðuman streám a flood of tears poured forth pale, a surging stream welled , An. 1281. [Grein takes blát as a noun, but cf. for the construction vv. 1271-3 : Com hæleða þreát . . . wadan wælgífre.]
This is a supplementary entry with editorial changes to an entry in the main volume of the dictionary. Look under the 'Possibly connected entries' below, or for the same headword in the list to the left.

A Combined List of Abbreviations.

Abbreviation not recognized. See:

A Combined List of Abbreviations.