headwork

• POS: Noun
• HYPHEN: head=work

CIDE DICTIONARY

headwork, n. 

 Mental labor.  [1913 Webster]

OXFORD DICTIONARY

headwork, n. mental work or effort.

THESAURUS

headwork

abstract thought, act of thought, application, boning, brainwork, cerebration, cogitation, conceit, conception, conceptualization, conning, contemplation, cram, cramming, creative thought, drill, engrossment, excogitation, exercise, extensive study, grind, grinding, heavy thinking, idea, ideation, imageless thought, inspection, intellection, intellectual exercise, intellectualization, lucubration, mental act, mental labor, mental process, mentation, noesis, perusal, practice, ratiocination, reading, reasoning, restudy, restudying, review, straight thinking, study, studying, subject, swotting, thinking, thinking aloud, thinking out, thought, wide reading