Definition of hard:
not easy; requiring great physical or mental effort to accomplish or comprehend or endure; "a difficult task"; "nesting places on the cliffs are difficult of access"; "difficult times"; "why is it so hard for you to keep a secret?"
dispassionate; "took a hard look"; "a hard bargainer";
resisting weight or pressure
very strong or vigorous; "strong winds"; "a hard left to the chin"; "a knockout punch"; "a severe blow"
characterized by effort to the point of exhaustion; especially physical effort; "worked their arduous way up the mining valley"; "a grueling campaign"; "hard labor"; "heavy work"; "heavy going"; "spent many laborious hours on the project"; "set a punishing pace"
produced without vibration of the vocal cords; "unvoiced consonants such as `p' and `k' and `s'"
(of light) transmitted directly from a pointed light source
(of speech sounds); produced with the back of the tongue raised toward or touching the velum; "Russian distinguished between hard consonants and palatalized or soft consonants"
given to excessive indulgence of bodily appetites especially for intoxicating liquors; "a hard drinker"
being distilled rather than fermented; having a high alcoholic content; "hard liquor"
unfortunate or hard to bear; "had hard luck"; "a tough break"
dried out; "hard dry rolls left over from the day before"
with effort or force or vigor; "the team played hard"; "worked hard all day"; "pressed hard on the lever"; "hit the ball hard"; "slammed the door hard"
with firmness; "held hard to the railing"
earnestly or intently; "thought hard about it"; "stared hard at the accused"
causing great damage or hardship; "industries hit hard by the depression"; "she was severely affected by the bank's failure"
slowly and with difficulty; "prejudices die hard"
indulging excessively; "he drank heavily"
into a solid condition; "concrete that sets hard within a few hours"
very near or close in space or time; "it stands hard by the railroad tracks"; "they were hard on his heels"; "a strike followed hard upon the plant's opening"
with pain or distress or bitterness; "he took the rejection very hard"
to the full extent possible; all the way; "hard alee"; "the ship went hard astern"; "swung the wheel hard left"