Mullion
A long thin mark is called a "line."
ROD!
A long thin scarf is typically called a "scarf" or a "skinny scarf".
Neck or fretboard
Neck or fretboard
Because they were ships? Do you mean longships? They were long and thin.
The long thin light bulb is called a fluorescent tube or a fluorescent light bulb. It is commonly used in commercial buildings, offices, and schools for general lighting purposes.
A window pane of clear glass. Clear cellophane or acrylic sheeting. Very thin ice. The list is long....
Thin neckwear is typically called a tie or a necktie. It is a long piece of cloth worn around the neck, usually with formal or business attire.
Origins Norwegian Word Ski
cloth is made up of thin long structures called fibers