from
The Collaborative International Dictionary of English v.0.48
Endeavor \En*deav"or\, n. [Written also endeavour.]
An exertion of physical or intellectual strength toward the
attainment of an object; a systematic or continuous attempt;
an effort; a trial.
[1913 Webster]
To employ all my endeavor to obey you. --Sir P.
Sidney.
[1913 Webster]
{To do one's endeavor}, to do one's duty; to put forth
strenuous efforts to attain an object; -- a phrase derived
from the Middle English phrase "to do one's dever" (duty).
"Mr. Prynne proceeded to show he had done endeavor to
prepare his answer." --Fuller.
Syn: Essay; trial; effort; exertion. See {Attempt}.
[1913 Webster]