n. A stabilising rope from the top of the mainmast to the bottom of the foremast.
the GNU version of the Collaborative International Dictionary of English
n. The stay extending from the foot of the foremast to the maintop.
n. Main support; principal dependence.
The Century Dictionary and Cyclopedia
n. The rope which secures the head of the mainmast of a vessel forward.
n. 2. Chief support; main dependence: as, their mainstay is fishing.
n. plural All the stays which give support to the main lower mast, maintopmast, and maintopgallantmast.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. a prominent supporter
n. a central cohesive source of support and stability
n. the forestay that braces the mainmast
Word Usage
"The lot more includes her jewellery and interior designing business, which she calls her mainstay profession. “I have quite a few theme projects coming up on the interior designing front."