aquamarine

What it means

1. countableuncountableThe bluish-green colour of the sea.
2. countableuncountableA transparent bluish-green, sometimes yellow-green, variety of beryl.

   1 more example

   Before we could embark on the details of his mother's health we were joined by a fair, plump woman of indefinite age, who had once been—and at moments still was—very pretty. She wore a simple black silk dress, perhaps in deference to Tilly's death, though the note of mourning was jarred by flamboyant aquamarine ear-rings and too much rouge.

   1956, Delano Ames, chapter 4, in Crime out of Mind

In a sentence

Before we could embark on the details of his mother's health we were joined by a fair, plump woman of indefinite age, who had once been—and at moments still was—very pretty. She wore a simple black silk dress, perhaps in deference to Tilly's death, though the note of mourning was jarred by flamboyant aquamarine ear-rings and too much rouge.

1956, Delano Ames, chapter 4, in Crime out of Mind

Where it comes from

1. Proto-Indo-European*h₂ékʷeh₂
2. Proto-Italic*akʷā
3. Latinaqua
4. Proto-Indo-European*mer-?
5. Proto-Indo-European*móri
6. Proto-Italic*mari
7. Latinmare
8. Latinmarīnus
9. Latinaqua marīna
10. Englishaquamarine

From Latin aqua marīna (“sea water”), adjective form from mare (“sea”).