Alternative form of host rock

Short for graft-versus-host disease.

plural of hostis humani generis.

(now idiomatic, rare) To calculate one's bill without checking with the host or landlord; hence, to come to false conclusions, to miscalculate.

plural of graft-versus-host disease

(pathology) A medical complication following the receipt of transplanted tissue from a genetically different person.

The property of being a host.