شك

شَكٌّ ذ [used as a subst.] signifies Doubt; (Msb; [see 1;]) or the contr. of يَقِينٌ; (S, O, Msb, K;) by which explanation is meant a wavering or vacillation in opinion between two things, whether they be equal [ in probability ] or such that one of them outweighs [ therein ] the other; or, as the expositors explain its meaning in the Kur x. 94, uncertainty: (Msb:) or a wavering or vacillation in opinion, between two inconsistent things, without making either of them to outweigh the other in the estimation of him who conceives the شَكّ: or, as some say, a pausing, or hesitation, between two extremes that are equal [ in probability ], without the mind's inclining to either of them: when one of them is made to outweigh, without the other's being rejected, it is ظَنٌّ: (KT:) accord. to Er-Rághib, it is the alternation, or confusedness, of two inconsistent things, in the judgment of a man, and their being equal: this is sometimes because of there being two indications, equal in his judgment, of the two inconsistent things; or of there being no indication thereof: and sometimes it relates to the question whether a thing be, or be not; and sometimes, to the question of what kind it is; and sometimes, to some of its qualities; and sometimes, to the accident that is the cause of its being: it is a species of جَهْل; but is more special than this; for جهل is sometimes the utter nonexistence of knowledge of the two inconsistent things; so that every شكّ is جهل, but every جهل is not شكّ: (TA:) accord. to some, the primary meaning is a state of commotion, or disturbance, of the heart and mind: (Msb:) pl. شُكُوكٌ. (K.) ― -b2- [Hence, يَوْمُ الشَّكِ The day of which one doubts whether it be the last of one month or the first of the next month: and generally, whether it be the last of Shaabán or the first of Ramadán; and to fast on this day is forbidden.] -A2- Also A small crack in a bone. (K.) ― -b2- And A seam, or line of sewing, of a garment. (L in art. صوح.) ― -b3- [And accord. to Freytag, A coat of mail composed of narrow rings: but he names no authority for this.] -A3- And [ Arsenic; ] a certain medicament, that destroys rats; brought from Khurásán, from the mines of silver; (K, TA;) of two kinds, (TA,) white and yellow; (K, TA;) now known by the name of سَمُّ الفَأْرِ [ ratsbane ]. (TA.)