underline

 

verb

Pronunciation: /ʌndəˈlʌɪn/
[with object]
  • draw a line under (a word or phrase) to give emphasis or indicate special type: certain phrases had been underlined
  • emphasize (something): the improvement in retail sales was underlined by these figures

noun

Pronunciation: /ˈʌndəlʌɪn/
  • 1a line drawn under a word or phrase, especially for emphasis: sub-headings have an underline in blue
  • 2the line of the lower part of an animal’s body: she has a white tail and underline