What is the meaning of Yankee?

Alternative letter-case form of Yankee of the ICAO/NATO radiotelephony alphabet.

A headsail resembling a genoa or a jib but with a high-cut clew, normally used together with a staysail. A sailing boat is typically equipped with three yankee sails of different sizes, number one being the largest.

Alternative letter-case form of Yankee from the NATO/ICAO Phonetic Alphabet.

Obsolete form of Yankee.

Yankee

an Anglo-American, as opposed to someone with French ancestry; resident or native of the rest of the United States

alternative spelling of yanqui

alternative spelling of yanqui

Source: wiktionary.org