Definition of "hart"

hart¹

/hɑːt/

noun
plural harts
1. A male deer, especially the male of the red deer after his fifth year.
  Quotations
  With milke-white Hartes vpon an Iuorie ſled,Thou ſhalt be drawen amidſt the froſen Pooles,And ſcale the yſie mountaines lofty tops:Which with thy beautie will be soone reſolu’d.
  c. 1587–1588, [Christopher Marlowe], Tamburlaine the Great. […] The First Part […], 2nd edition, part 1, London: […] [R. Robinson for] Richard Iones, […], published 1592; reprinted as Tamburlaine the Great (A Scolar Press Facsimile), Menston, Yorkshire, London: Scolar Press, 1973, (please specify the page)
  She Huntresse-like the Hart pursues;
  1612, Michael Drayton, Poly-Olbion, song 13 p. 213

hart²

/hɑːt/

noun
plural harts
1. Obsolete spelling of heart
  Quotations
  For this reliefe much thanks, tis bitter cold, and I am ſick at hart.
  c. 1599–1602 (date written), William Shakespeare, “The Tragedie of Hamlet, Prince of Denmarke”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, [Act I, (please specify the scene number in lowercase Roman numerals)]