'Half-length' definitions:

Definition of 'half-length'

From: WordNet
adjective
Representing only the upper half of the body; "a half- length portrait"
adjective
Abridged to half its original length
noun
A portrait showing the body from only the waist up

Definition of 'Half-length'

From: GCIDE
  • Half-length \Half"-length`\ (-l[e^]ngth`), a. Of half the whole or ordinary length, as a picture. [1913 Webster]