Hypertext Webster Gateway: "topmast"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Topmast \Top"mast\, n. (Naut.)
The second mast, or that which is next above the lower mast,
and below the topgallant mast.
From WordNet (r) 1.7 (wn)
topmast
n : the mast next above a lower mast and topmost in a
fore-and-aft rig
Additional Hypertext Webster Gateway Lookup
Gateway by dict@stokkie.net
stock only wrote the gateway and does not have any control over the contents;
see the Webster Gateway FAQ,
and also the Back-end/database links and credits.