The Collaborative International Dictionary of English v.0.48:

Start-up \Start"-up`\, a.
   Upstart. [R.] --Walpole.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Start-up \Start"-up`\ (st[aum]rt"[u^]p`), n.
   1. One who comes suddenly into notice; an upstart. [Obs.]
      --Shak.
      [1913 Webster]

   2. A kind of high rustic shoe. [Obs.] --Drayton.
      [1913 Webster]

            A startuppe, or clownish shoe.        --Spenser.
      [1913 Webster]

WordNet (r) 3.0 (2006):

startup
    n 1: the act of setting in operation; "repeated shutdowns and
         startups are expensive"
    2: the act of starting a new operation or practice; "he opposed
       the inauguration of fluoridation"; "the startup of the new
       factory was delayed by strikes" [syn: inauguration,
       startup]

U.S. Gazetteer Places (2000):

Startup, WA -- U.S. Census Designated Place in Washington
   Population (2000):    817
   Housing Units (2000): 356
   Land area (2000):     3.905169 sq. miles (10.114342 sq. km)
   Water area (2000):    0.083024 sq. miles (0.215031 sq. km)
   Total area (2000):    3.988193 sq. miles (10.329373 sq. km)
   FIPS code:            67595
   Located within:       Washington (WA), FIPS 53
   Location:             47.865917 N, 121.744607 W
   ZIP Codes (1990):
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Startup, WA
    Startup