سَكٌّ

A nail; a pin, or peg, of iron; as also ↓ سَكِىٌّ; (S, K;) like as one says دَوٌّ and دَوِىٌّ: (S:) plural سِكَاكٌ (S, K) and سُكُوكٌ. (K.) [A verse of Aboo-Dahbal El-Jumahee is cited as an example in the TA as follows:

دِرْعِى دِلَاصٌ سَكُّهَا سَكٌّ عَجَبْ

وَجَوْبُهَا القَاتِرُ مِنْ سَيرِ اليَلَبْ

but see يَلَبٌ.]

-A2- A straight, or an even, building, and excavation, (O, K,) like a wall, without curvity, or bending. (O.)

A coat of mail narrow in the rings; (S, K;) as also ↓ سُكٌّ, and ↓ سَكَّاءُ: (K:) or, according to the O, soft in the rings. (TA.)

See also the next paragraph.