True allergies to cow's milk are relatively uncommon. Only 2 to 3 percent of children are allergic to milk, according to the AAP, and almost all of them outgrow it by age 3. (Learn the difference between a milk allergy and lactose intolerance .).
The underscore [ _ ] (also called underline, underbar, low line, or low dash) is a character that originally appeared on the typewriter and was primarily used to underline words.
Wiktionary (0.00 / 0 votes) Rate this definition: underscore (Noun). An underline; a line drawn or printed beneath text; the character. underscore (Noun). A piece of background music. underscore (Verb). To underline; to mark a line beneath text. underscore (Verb). To emphasize or draw attention to.iktionary (0.00 / 0 votes) Rate this definition: underscore (Noun). An underline; a line drawn or printed beneath text; the character. underscore (Noun). A piece of background music. underscore (Verb). To underline; to mark a line beneath text. underscore (Verb). To emphasize or draw attention to.