Definition of どんぐりの背比べ (どんぐりのせいくらべ)
せいくら
                        どんぐりの背比べ
どんぐりのせいくらべ
dongurinoseikurabe
expression, noun
•
                
having no outstanding characteristics, all seeming about the same, bragging competition concerning matters of little importance, pissing contest, height comparison among acorns(idiom )
Other readings:
                ドングリの背比べ【ドングリのせいくらべ】
、団栗の背比べ【どんぐりのせいくらべ】
                Related Kanji
| 背 | stature, height, back, behind, disobey, defy, go back on, rebel | 
| 比 | compare, race, ratio, Philippines | 
| 団 | group, association | 
| 栗 | chestnut |