When to seek medical advice. 1  You experience bleeding or severe pain after an injury. 2  Bone or tendons are exposed. 3  The knee is visibly out of place. 4  There's sudden swelling or redness.  You can't bend your knee or put weight on it.
subject definition, subject meaning | English dictionary. subject. a the predominant theme or topic, as of a book, discussion, etc. 4 a person or thing that undergoes experiment, analysis, treatment, etc. 5 a person who lives under the rule of a monarch, government, etc.
â¢ SUBJECT (verb). The verb SUBJECT has 4 senses: 1. cause to experience or suffer or make liable or vulnerable to. 2. make accountable for. 3. make subservient; force to submit or subdue. 4. refer for judgment or consideration. Familiarity information: SUBJECT used as a verb is uncommon.ypernyms (subject is a kind of...): knowledge base; knowledge domain (the content of a particular domain or field of knowledge). Hyponyms (each of the following is a kind of subject): futuristics; futurology (the study or prediction of future developments on the basis of existing conditions).