D defs.my
Entry 2 senses Webster, 1913

Cairn

/kĕrn/ · IPA /kɛ(ə)ɹn/
01 n. A rounded or conical heap of stones erected by early inhabitants of the British Isles, apparently as a sepulchral monument.
  1. 1.
    A rounded or conical heap of stones erected by early inhabitants of the British Isles, apparently as a sepulchral monument.
    “Now here let us place the gray stone of her cairn.” — Campbell.
  2. 2.
    A pile of stones heaped up as a landmark, or to arrest attention, as in surveying, or in leaving traces of an exploring party, etc.