n. 石堆纪念碑, 石冢, 堆石界标

Cairn \Cairn\, n. [Gael. carn, gen. cairn, a heap: cf. Ir. & W.
carn.]
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. 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. --C. Kingsley. Kane.