edge (n.)
ardour, keen desire
Ham III.ii.259[Hamlet to Ophelia] It would cost you a groaning to take off mine edge [i.e. satisfying my sexual appetite would end up with you groaning in labour]
MM I.iv.60[Lucio to Isabella, of Angelo] a man ... [who] doth rebate and blunt his natural edge / With profits of the mind
R2 I.iii.296[Bolingbroke to John of Gaunt] who can ... cloy the hungry edge of appetite / By bare imagination of a feast
TS I.ii.72[Petruchio to Hortensio, of marrying a rich wife whatever her qualities] She moves me not, or not removes at least / Affection's edge in me
SHAKESPEARE'S WORDS © 2018 DAVID CRYSTAL & BEN CRYSTAL