rare, curious, unusual
珍しい(めずらしい)、珍味(ちんみ)、珍事(ちんじ)
rare, delicacy, rare event
On-reading (チン) is used in compounds; kun-reading (めずら(しい)) is used standalone or with okurigana. Appears in many compounds — memorize the key ones rather than the kanji in isolation. Has multiple meanings (rare; curious; unusual). Context determines which applies — pay attention in reading passages. This kanji forms verbs/adjectives with okurigana. Practice both the word form and compound forms.
From the JLP Quiz question bank — the word in the form it is actually tested in.
「珍しい」の同義語はどれですか?
Answer: レアな