Definitions

1. noun

any of several plants of the genus Rheum, especially R. rhabarbarum, having large edible leaves and a sour taste, used especially in salads, sauces, and pies.

“The rhubarb in her pie was unexpectedly tart.”

2. verb

to argue or quarrel, especially in a noisy or aggressive manner.

“The neighbors started to rhubarb over the noise complaint.”

3. verb

to engage in petty or unimportant disputes, often in an annoying or tedious way.

“The politicians were accused of rhubarbing over minor issues.”