A consolidated lava-flow covering a considerable area.(noun)
The Century Dictionary (Public Domain)
Use "lava-field" in a sentence
"(I remarked on the way to Ohod signs of a lava-field.)"
"Rolls drew his tender past the Roman fish-pond; we skirted the western lava-field, along the now hard, grass-grown swamp, to the blue walls of the silent fort, with its silken-sounding palms, behind whose stillness lay perhaps more fear than peace."
"We feasted on the first day once, on the second twice, on the third twice; at Isawiya: and then, on May the thirtieth, we saddled and rode easily for three hours, past an old sanded lava-field to a valley in which seven-foot wells of the usual brackish water lay all about us."