Entry 3 senses · 2 variants Webster, 1913

Heartburning

/(-bûrn`ĭng)/ · Heart·burn·ing · IPA

01 a. Causing discontent.

02 n. Same as Heartburn.

1.
Same as Heartburn.(Med.) See: Heartburn
2.
Discontent; secret enmity.
“The transaction did not fail to leave heartburnings.” — Palfrey.