D defs.my
Entry 3 senses Webster, 1913

Observance

/əb-zûrʹvəns/ · Ob·serv·ance · IPA /əbˈzɝvəns/
01 n. The act or practice of observing or noticing with attention; a heeding or keeping with care; performance; -- usually with a sense of strict…
  1. 1.
    The act or practice of observing or noticing with attention; a heeding or keeping with care; performance; -- usually with a sense of strictness and fidelity; as, the observance of the Sabbath is general; the strict observance of duties.
    “It is a custom More honored in the breach than the observance.” Shak.
  2. 2.
    An act, ceremony, or rite, as of worship or respect; especially, a customary act or service of attention; a form; a practice; a rite; a custom.
    “At dances These young folk kept their observances.” Chaucer.
    “Use all the observance of civility.” Shak.
    “Some represent to themselves the whole of religion as consisting in a few easy observances.” Rogers.
    “O I that wasted time to tend upon her, To compass her with sweet observances!” Tennyson.
  3. 3.
    Servile attention; sycophancy.[Obs.]
    “Salads and flesh, such as their haste could get, Served with observance.” Chapman.
    “This is not atheism, But court observance.” Beau. & Fl.
    “Love rigid honesty, And strict observance of impartial laws.” — Roscommon.