Having permanent horns with a bony core, as cattle.(adjective)
Gnu Collaboartive International Dictionary of English: licensed under The Code Project Open License (CPOL)
Use "hollow-horned" in a sentence
"But any other A. proposition is presumably convertible only by limitation, and this is shown by Fig. 1; where _All hollow-horned animals are ruminants_, but we can only say that _Some ruminants are hollow-horned_."
"The existence in South America of a fossil horse, of the mastodon, possibly of an elephant,74 and of a hollow-horned ruminant, discovered by MM."
"When America, and especially North America, possessed its elephants, mastodons, horse, and hollow-horned ruminants, it was much more closely related in its zoological characters to the temperate parts of Europe and Asia than it now is."