دعمصQ. 1 دَعْمَصَ It (water) abounded with دَعَامِيص [pl. of دُعْمُوصٌ]. (K.) دُعْمُوصٌ A certain animalcule (دُوَيْبَّةٌ), (S, K,) that dives in water: (S:) or a certain black animalcule that swims upon water: (Mgh:) or a certain worm (دُودَةٌ), that is in pools left by torrents when their water sinks into the earth: (IDrd, K:) or a certain worm (دودة) having  two heads, seen in water when it becomes little in quantity: (IB:) pl. دَعَامِيصُ and دَعَامِصُ. (S.) b2:  [Hence, app.,] (assumed tropical:)  One who enters much into affairs; who is a frequent visitor of kings. (K.) And hence, الأَطْفَالُ دَعَامِيصُ الجَنَّةِ, meaning (assumed tropical:)  [Infants will be] roamers in Paradise: they  will not be debarred from any dwelling: (K:) a trad.: but the words occurring in a trad. of Aboo-Hureyreh are صِغَارُكُمْ دَعَامِيصُ الجَنَّةِ [Your little children &c.]. (TA.) b3:  Also The embryo in the belly of a mare until the fortieth day: then its make becomes apparent, and it is called دُودَةٌ, until three months old: when it is called سَلِيلٌ. (Kr, TA.) دُعَيْمِيصٌ [dim. of دُعْمُوصٌ]. b2:  One says, هُوَ دُعَيْمِيصُ هٰذَا الأَمْرِ, meaning He is acquainted with, or knowing in, this affair. (S, K.) دُعَيْمِيصُ الرَّمْلِ was the name of a certain cunning, or knowing, or skilful, man; and hence the saying above mentioned: (S:) he was a black slave, very cunning or knowing or skilful, and an expert guide of the way. (K.) And [hence] one says, أَهْدَى مِنْ دُعَيْمِيصُ الرَّمْلِ [More expert in showing the way than Do'eymees-er-Raml]. (O, TA.)