ركو

رَكِيَّةٌ ذ A well: (S, Msb, K:) or a well containing water; (MA;) otherwise a well is not thus called: (Durrat el-Ghowwás, in De Sacy's Chrest. Ar. ii. 332:) or a well not made neat; or not constructed [or cased ] with bricks [&c.]: (MA:) pl. رَكَايَا (S, Msb, K) and ↓ رَكِىٌّ, (S, and so in some copies of the K,) or the former is the pl. and ↓ the latter is [properly speaking] a gen. n., [i. e. a coll. gen. n.,] and often occurs as a sing. and as a pl., (Nh, TA,) or the pl. is also رُكِىٌّ: (so in some copies of the K and in the TA:) accord. to ISd, it is from رَكَا in the first of the senses assigned to this verb above. (TA.)