Definition of "hest"

[T]hou [Ariel] vvaſt a Spirit too delicate / To act her [the witch Sycorax's] earthy, and abhord commands, / Refuſing her grand heſts, ſhe did confine thee / By helpe of her more potent Miniſters, / And in her moſt vnmittigable rage, / Into a cloven Pyne, […]

1610–1611 (date written), William Shakespeare, “The Tempest”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, [Act I, scene ii], page 4, column 1

Fer[dinand]. […] VVhat is your name? / Mir[anda]. Miranda, O my Father, / I haue broke your heſt to ſay ſo.

1610–1611 (date written), William Shakespeare, “The Tempest”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, [Act III, scene i], page 11, column 1