مقر1 مَقِرَ, aor. ـَ (S, Msb,) inf. n. مَقَرٌ, (S, A, Msb, K,) It was, or became, bitter; (S, A, Msb, K;) as also ↓ امقر, (ISk, IKtt, A, Msb, K,) inf. n.  إِمْقَارٌ: (Msb:) or sour, or acid: (K:) and ↓ امقر, said of milk, (Az, A, K,) it became almost bitter, by reason of its quality of biting the tongue: (A:) or lost its [proper] flavour (Az, K) by becoming intensely sour or acid. (Az, TA.) A2: مَقَرَ عُنُقَهَ, (ISk, S, A, K,) aor. ـُ inf. n. مَقْرٌ, (ISk, S,) He bruised his neck: (S, A:) or beat it with a staff or stick, so as to break the bone in pieces, leaving the skin whole. (A, K.) b2:  and hence, (A,) مَقَرَ السَّمَكَةَ المَالِحَةَ He macerated the salt fish in vinegar; (A, K;) as also ↓ امقر. (K.) And in like manner you say of anything that you macerate. (TA.) 4 أَمْقَرَ see 1, in three places.A2:  أَمْقَرْتُ لِفُلَانٍ شَرَابًا I made beverage bitter to, or for, such a one. (IDrd.) مَقْرٌ: see مَقِرٌ, in three places.مَقِرٌ Bitter; (S, A, Msb, K;) as also ↓ مَقْرٌ (TA) and ↓ مُمْقِرٌ (S, A, K) and ↓ يَمْقُورٌ: (Sgh, K:) or sour; acid; as also ↓ مُمْقِرٌ: (K:) which  last also signifies intensely sour or acid; (Az, Aboo-Málik, S; *) applied to milk: (the same, and K:) or sour, or acid, milk. (Msb.) b2: Aloes; syn. صَبِرٌ: (As, S, A, Msb, K:) as also ↓ مَقْرٌ: (S:) or a certain thing resembling it: (IKt, Msb, K:) or poison: as also ↓ مَقْرٌ; (K;) which is said by some to be a form used by poetic license: (TA:) or, accord. to AA, a certain bitter kind of tree: and accord. to AHn, a certain plant, which grows in leaves without branches. (TA.) [See صَقِرٌ.]مُمْقِرٌ: see مَقِرٌ, in two places.سَمَكٌ مَمْقُورٌ Fish macerated in vinegar and salt, so as to become a cold sauce or fluid seasoning: (Az, TA:) or sour, or acid, fish: (IAar, TA:) or fish bruised (يُمْقَرُ) in water and salt: you  should not say مَنْقُورٌ. (S.) يَمْقُورٌ: see مَقِرٌ.