noun
practice kit; practice board
A physical object used for practicing a skill, such as a dummy, model, or board. Common in contexts like sports, music, or crafts.
ギターの練習台を使ってコードを覚えた。
I learned chords using a guitar practice board.
この練習台は本物の鍵盤と同じ重さだ。
This practice kit has the same key weight as a real keyboard.
noun
practice partner; training partner
A person who serves as a partner for practice, especially in martial arts, performing arts, or skill training. Synonymous with 稽古台 (けいこだい).
See also: 稽古台 (けいこだい)
彼は私の練習台になってくれた。
He acted as my practice partner.
柔道の練習台を探している。
I'm looking for a training partner for judo.
Compound of 練習 (れんしゅう, 'practice') and 台 (だい, 'stand, platform, base'). The 'practice partner' sense is a metaphorical extension of the physical 'practice stand' meaning.