From the same as naqod; a crumb (as broken to spots); also a biscuit (as pricked) -- cracknel, mouldy.
see HEBREW naqod
H5350. niqqud
[נִקּוּד] noun [masculine] perhaps what is crumbled or easily crumbles, crumb (compare נְקֻדָּה); — only plural
1 crumbs: נִקֻּדִים הָיָה יָבֵ֖שׁ צֵידָם לֶחֶם כֹּל Joshua 9:5 all the bread of their provision was dry (and) become crumbs (ᵐ5 βεβρωμένος [οι]; ᵑ7 in frusta comminuti), compare נ וְהָיָה ׳יָבֵשׁ 9:12 (see Di Benn).
2 apparently a kind of (hard) biscuit or cake 1 Kings 14:3 (brought as present; + לֶחֶם, etc.).