noun
Refers to small, loose stones or pebbles, often found in nature. The term is somewhat poetic and appears in the Japanese national anthem 'Kimigayo'.
川原でさざれ石を拾った。
I picked up pebbles at the riverbank.
庭にさざれ石を敷き詰めた。
I covered the garden with gravel.
noun
conglomerate rock; boulder formed from pebbles and sediment
A geological term for a rock made of cemented pebbles and sediment. This sense is less common in everyday language and is more technical.
この崖はさざれ石でできている。
This cliff is made of conglomerate rock.