As an adjective pomme
is (heraldry|of a cross) having the ends terminating in rounded protuberances or single balls.
As a noun momme is
the unit used in pearl and paper trading (375 grams).
pomme
English
From (etyl), ultimately from poma.
Noun
pomme' (plural ' pomeis )
(heraldiccharge) A roundel vert (green circular spot), resembling an apple. Also pomey.
References
*Charles Mackinnon of Dunakin, The Observer's Book of Heraldry , Frederick Warne and Co., p. 60.