Как по Английски будет velamen

noun

A piece of material extended on a mast to catch the wind and propel a boat or ship or other vessel.

Примеры использования:

All the sails were unfurled

verb

Travel in a boat with sails, especially as a sport or recreation.

Примеры использования:

Ian took us out sailing on the lake

noun

An outer layer of empty cells in the aerial roots of epiphytic orchids and aroids.

Примеры использования:

Over watering turns the velamen brown and mushy and the roots lose their ability to absorb water.