1) to guard
    1a) to watch, keep watch
    1b) to guard or watch, have an eye upon: lest he escape
    1c) to guard a person (or thing) that he may remain safe
        1c1) lest he suffer violence, be despoiled, etc. to protect
        1c2) to protect one from a person or thing
        1c3) to keep from being snatched away, preserve safe
             and unimpaired
        1c4) to guard from being lost or perishing
        1c5) to guard one's self from a thing
    1d) to guard i.e. care for, take care not to violate
        1d1) to observe
 2) to observe for one's self something to escape
    2a) to avoid, shun flee from
    2b) to guard for one's self (i.e. for one's safety's sake) so
        as not to violate, i.e. to keep, observe (the precepts of
        the Mosaic law)

 For Synonyms see entry G5874