Lane files this root under نسو, and the entries below are that article. The Qur’ān’s own spelling is نسى.
Core sense — he forgot it; he pretended to have forgotten itgenerated
See form 6.
By degrees shall We teach thee to declare (the Message), so thou shalt not forget,
Occurrences of this form in the Qur’ān, not Lane’s choice of verse. They show the word in use; they do not say which sense above applies. Where more occur than are shown, the shortest āyāt are chosen.
Core sense — he pretended to have forgotten it; he forgot itgenerated
He pretended that he had forgotten it; and he forgot it, like نَسِيَهُ, or he forced himself to put it out of his mind.
Said of a word or the like. Occurs often in the larger lexicons.
Core sense — the vein of the thigh, running from the hip to the hoofgenerated
Commonly عِرْقُ النَّسَا; apparently the sciatic vein: the portion, in the thigh, of the vein which in the back is called the وَتِين, and which extends to the shank, where it is called the صَافِن. IAth, under أَبْهَرُ.
Or the صاَفِن and the عرق النسا are two branches of one عِرْق, that is, one vein. Ibn-Seenà, volume 1, book 3, page 608, where the opening of each of these to let blood is mentioned.
In a solid-hoofed animal, النسا is a vein proceeding from the hip, or haunch, lying within each thigh, then passing by the hock, so as to reach the hoof.
When the breast is fat, each of its thighs becomes cleft by two large portions of flesh, and the نسا runs between them and is visible.
[Today it seems to be applied by some to the sciatic nerve: and عِرْقُ النَّسَا, as also النَسَا by itself, often means sciatica, or hip-gout: see نِقْرِسٌ, and also شَنِجٌ.]
Core sense — one who causes it to be forgottengenerated
For مَنْسِئِهَا, see a verse cited under عُقْبَةٌ.