A lace fichu was a type of neckline popular in women's fashion in the late eighteenth century. Later, a fichu came to mean a kind of short shawl, popular in Victorian times.
The solfeggio, or sol-fa, is a sung musical scale where each note is sung as a different syllable. It is a way of training the voice. The eight notes of the octave are rendered as do, re, mi, fa, sol, la, ti, doh, as in the famous Rodgers and Hammerstein song Do-Re-Mi from The Sound of Music.
The Order of St Anne started out in 1735 as a military honour bestowed by the Duke of Holstein-Gottorp. His wife was Anna Petrovna, Peter the Great of Russia's daughter, which led to the Order being adopted in Russia as well. The award comes in three classes: the first class awards a hereditary peerage, whereas the second and third bestows non-hereditary peerages. Anton Chekhov wrote a story concerning this honour, Anna on the Neck.
The Trepak, or Tropak, is an energetic folk dance that originated in the Zaporozhian Cossack region of what is now Ukraine. During the dance the tempo gradually increases until the dancers are moving at a ferocious pace. Tchaikovsky used a Trepak for a passage in The Nutcracker.