mainsail
UK[ˈmeɪnseɪl]US[ˈmeɪnseɪl]
n
the largest and most important sail on a sailing ship, set on the mainmast.
Morpheme Breakdown
main
sail
main
principal
sail
sheet of canvas
Etymology
the word 'mainsail' is a transparent compound formed from two old english roots. 'main' evolved from the proto-germanic 'maginą', meaning "power," which shifted in meaning to denote something primary or principal. 'sail' descends from proto-germanic 'seglą'. the compound logically names the principal canvas sheet on a vessel, specifically the one attached to the mainmast. its formation follows a straightforward descriptive pattern in nautical terminology, where 'main-' specifies the key mast or spar to which the sail is attached.
Analysis
Structure: main (principal) + sail (sheet of canvas)
main: from old english 'mægen' meaning "strength, power," later "principal, chief." in this compound, it functions as an adjective meaning "most important."
sail: from old english 'segel' meaning "a sheet of canvas used to catch the wind." it is the core noun denoting the object.
Examples
the crew worked together to hoist the heavy mainsail.
a tear in the mainsail required immediate repair during the storm.
the yacht's performance improved significantly after they trimmed the mainsail.