quotation marks

Từ điển Oxford Advanced Learner 8th

quoˈtation marks [quotation marks] BrE NAmE (also quotes, ˈspeech marks) (BrE also in·vert·ed commas) noun plural
a pair of marks (‘ ’) or (“ ”) placed around a word, sentence, etc. to show that it is what sb said or wrote, that it is a title or that you are using it in an unusual way
See also: ↑inverted commas ▪ ↑speech marks

Example Bank:
•Put direct speech in quotation marks.
•There were quotation marks around the word ‘expert’.
•You can use double quotation marks inside single ones.