• (v. t. & i.) Same as Imposthumate. • (n.) A collection of pus or purulent matter in any part of an animal body; an abscess.
Im·post'hume noun [ A corruption of aposteme . See Aposteme .] A collection of pus or purulent matter in any part of an animal body; an abscess. 
a collection of purulent matter in a bag or cyst.