صدر

أَصْدَرُ ذ A man (M) having a large breast, or chest; (M, K, TA;) i. e. having the breast, or chest, or the upper part thereof, prominent; as also ↓ مُصَدَّرٌ. (TA.) -A2- الأَصْدَرَانِ Two veins (M, K) that beat, or pulse, (M,) beneath the temples: (M, K:) or the two sides of a man: or the two shoulder-joints: (TA:) the word has no singular. (M.) [Hence the saying,] جَاآءَ يَضْرِبُ أَصْدَرَيْهِ; (M, Meyd, K, TA;) and some say أَسْدَرَيْهِ [q. v.], (Meyd, TA,) and this is the original; (Meyd;) and some, أَزْدَرَيْهِ; (Meyd, TA;) a prov.; (M, Meyd, TA;) meaning He came beating [with his hand] his two sides, (TA,) or his two shoulderjoints: (Meyd, TA:) i. e. he came empty [ -handed ]; (M, Meyd, K, * TA;) not having accomplished the object of his desire: (Meyd:) or he came exulting, or behaving insolently, (Meyd, and Har p. 603,) not knowing where were his أَصْدَرَانِ: so accord. to Yoo: and some say, جَاآءَ بَضْرِبُ بِأَصْدَرَيْهِ. (Har.)