assembling

verb

1. (form-of, gerund, participle, present)present participle and gerund of assemble

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

noun

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[…]”