What does 内側 mean?
内側 is a Japanese noun meaning “inside; interior; inner part” in English. It is written as 内側 in kanji, うちがわ in hiragana, and uchigawa in romaji. This word is part of JLPT N3 vocabulary.
Example sentence
ドアは内側から鍵がかかっていた。
The door was locked from within.