Hark v. i. : To listen; to hearken.

Example:
Christmas carol question. How do you Hark a herald and who is Gloria?

Taxonomy
free encyclopedia, Christmas songs and carols, surname, Hark! The Herald Angels Sing, Christmas, Hark! The Village Wait, Hark At Barker, film director, Hark Bohm, Hark Olufs, Harker, Harke & Burr, a Christmas carol, Harkness Commons, disambiguation pages, search, Charles Wesley, Sufjan Stevens.

Defination from the web:
Hark The Sound, the alma mater of the University of North Carolina. Hark At Barker, a 1969 British sitcom starring Ronnie Barker " ... Lisa Hark, nutritionist and consultant for the BBC TV series, Honey, We're Killing the Kids. Sabine Hark (born 1962), a German sociologist ...