sǐ​táng​r

solid

  1. 死 sǐ adjectiveverb
    fixed
    fixed; rigid; (of a knot) tight; (of a mechanical part) not movable
  2. hollow space
    (bound form) an inside cavity or hollow part of an object, such as the chamber of a gun or the firebox of a stove; often appears in 枪膛 qiāng​táng or 炉膛 lú​táng
  3. 儿 兒 r particleaffix
    [erhua suffix]
    A suffix attached to a word to form a retroflex ending, often indicating a small size, a sense of familiarity, or turning a word into a noun.