'Improvised' definitions:

Definition of 'improvised'

(from WordNet)
adjective
Done or made using whatever is available; "crossed the river on improvised bridges"; "the survivors used jury- rigged fishing gear"; "the rock served as a makeshift hammer" [syn: improvised, jury-rigged, makeshift]

Definition of 'Improvised'

From: GCIDE
  • Improvise \Im`pro*vise"\, v. t. [imp. & p. p. Improvised; p. pr. & vb. n. Improvising.] [F. improviser, it. improvvisare, fr. improvviso unprovided, sudden, extempore, L. improvisus; pref. im- not + provisus foreseen, provided. See Proviso.]
  • 1. To compose, recite, or sing extemporaneously, especially in verse; to extemporize; also, to play upon an instrument, or to act, extemporaneously. [1913 Webster]
  • 2. To bring about, arrange, do, or make, immediately or on short notice, without previous preparation and with no known precedent as a guide. [1913 Webster +PJC]
  • Charles attempted to improvise a peace. --Motley. [1913 Webster]
  • 3. To invent, or provide, offhand, or on the spur of the moment; as, he improvised a hammer out of a stone. [1913 Webster]