D defs.my
Entry 1 sense Webster, 1913

Sponson

/(-sŭn)/ · Spon·son · IPA
01 n. One of the triangular platforms in front of, and abaft, the paddle boxes of a steamboat.
  1. 1.
    One of the triangular platforms in front of, and abaft, the paddle boxes of a steamboat.(Shipbuilding)