Found 2 items, similar to half-brother.
English → English (WordNet) Definition: half-brother half-brother n : a son of your stepparent by a former marriage [syn: stepbrother]
English → English (gcide) Definition: Half-brother Half-brother \Half"-broth`er\ (-br[u^]th`[~e]r), n. A brother by one parent, but not by both. [1913 Webster]