Castillo de San Marcos National Monument

geographical name

Cas·til·lo de San Mar·cos National Monument ka-ˈstē-yō-də-san-ˈmär-(ˌ)kōs

historic site in northeastern Florida containing a Spanish fort

Browse Nearby Words

Castilloa

Castillo de San Marcos National Monument

casting

See all Nearby Words

Cite this Entry

Style

“Castillo de San Marcos National Monument.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Castillo%20de%20San%20Marcos%20National%20Monument. Accessed 6 Feb. 2026.

Copy Citation

Popular in Grammar & Usage

5 Verbal Slip Ups and Language Mistakes

'Buck naked' or 'butt naked'?

More Words You Always Have to Look Up

The Difference Between 'i.e.' and 'e.g.'

What’s the difference between ‘cemetery’ and ‘graveyard’?

Popular in Wordplay

Castillo de San Marcos National Monument

geographical name

Browse Nearby Words

Cite this Entry

More from Merriam-Webster on Castillo de San Marcos National Monument

More from Merriam-Webster

Word of the Day

sartorial

Popular in Grammar & Usage

5 Verbal Slip Ups and Language Mistakes

'Buck naked' or 'butt naked'?

More Words You Always Have to Look Up

The Difference Between 'i.e.' and 'e.g.'

What’s the difference between ‘cemetery’ and ‘graveyard’?

Popular in Wordplay

Words For Things You Didn't Know Have Names, Vol. 3

‘Fascism’: The Word’s Meaning and History

Is “GIF” Pronounced “Jiff” or “Giff”?

Why Is the Sport Called ‘Pickleball’?

Did Orange the Fruit or the Color Come First?

Popular

5 Verbal Slip Ups and Language Mistakes

Words For Things You Didn't Know Have Names, Vol. 3

‘Fascism’: The Word’s Meaning and History

Games & Quizzes