The hapax pomuant, included in Gdf (‘qui a le goût de la pomme’), AND1 (‘resembling an apple’) and hence in DEAFpré, as an unetymological derivative of pume, is most probably a misreading of poinnant, an otherwise unattested variant spelling of poignant (‘sharp, sour’).
a.
1sharp, sour:
(
c.1270; MS: s.xiii4/4
)
teu manere de fruit Ke lunge en l'estomac gist descenduit, Come est fruit acetus e pomuant (l. poinnant) Come pome gernette e autre freidant
2086
(pomuant) (c.1270)