Definitions from Wiktionary ( )

▸ adjective:  Without a head (body part).
▸ adjective:  Synonym of decapitated.
▸ adjective:  Naturally having and needing no head.
▸ adjective:  Without a head (hardware or device feature).
▸ adjective:  Without leadership.
▸ adjective:  (linguistics, of a phrase or compound) Not having a head morpheme or word.
▸ adjective:  (computing) Running without a graphical user interface; running without any attached output device (e.g., monitor) or input device (e.g., keyboard, mouse).
▸ adjective:  (of beer) Without a head of foam.
▸ adjective:  (obsolete) Heedless.
▸ adjective:  (obsolete, firearms) Rimless, not having a cartridge case rim (flange).

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