assembling

1. gerundparticiplepresentpresent participle and gerund of assemble

   She worked all night assembling the bicycle, but she succeeded.

plural assemblings

1. A gathering or assembly.

   This may perhaps be carried back to a more remote period than that in which the Persians invaded Greece, and may be traced to the annual assemblings of the people to sacrifice, at the graves of their departed friends[…]

   1824, Thomas Stackhouse, An epitome of the history, laws, and religion of Greece, page 281

   Synonyms: assemblage