قَنْطَرَ الشّىْءِ
1.
i. q.
عَقَدَهُ وَأَحْكَمَهُ [He tied, or knit, the thing; or, agreeably with modern usage, he arched, or vaulted, it; and made it firm, or strong]. (Zj.) Hence what is called a قَنْطَرَة is thus called because of its being firmly, or strongly, knit together, or arched, or vaulted, لِإِحْكَامِ عَقْدِهَا. (MF.) [It seems to signify He compacted the thing.
2.
Also, He collected the thing together into one aggregate; he aggregated it. See the pass. particle n., below.]