cracknel, mouldy

Strong’s Dictionary of Hebrew Words:

Transliteration:
niqqud
Phonic:
nik-kood’
Meaning:
from the same as 5348; a crumb (as broken to spots); also a biscuit (as pricked)
KJV Usage:
cracknel, mouldy

From Manners and Customs of the Bible:

Cracknels (nikkuddim) were some sort of thin hard biscuit carried by the common people on their journeys. Their name (from nakad, to mark with points) may indicate thin punctured biscuits, or those which will easily crumble.