pith

Từ điển Oxford Advanced Learner 8th

pith BrE [pɪθ] NAmE [pɪθ] noun uncountable
1. a soft dry white substance inside the skin of oranges and some other fruits
2. the essential or most important part of sth
•the pith of her argument

Word Origin:
[pith] Old English pitha, of West Germanic origin.

• Từ đồng nghĩa / Synonyms:
  kernel, substance, core, center, centre, essence, gist, heart, heart and soul, inwardness