From an unused root meaning to mark (by puncturing or branding); spotted -- speckled.
H5348. naqod
נָקֹד adjective speckled; — only of sheep and goats; ׳נ Genesis 30:32 (twice in verse), feminine plural נְקֻדּוֺת 30:35 (all "" טָלוּא), masculine plural נְקֻדִּים 30:39 ( "" id. + עֲקֻדִּים; — all these J); masculine plural also 31:8 (twice in verse) and (+ בְּרֻדִּים עֲקֻדִּים,) 31:10; 31:12 (all E).