Open English Wordnet
Nouns
(n)guarda person who keeps watch over something or someone (n)guardthe person who lines up between the center and the tackles on the offensive line of a football team on the line of scrimmage“the left guard was injured on the play” (n)guarda posture of defence in boxing or fencing“keep your guard up” (n)guardthe person who plays the position of guard on a basketball team (n)guarda military unit serving to protect some place or person (n)precaution, safeguard, guarda precautionary measure warding off impending danger or damage or injury etc.“he put an ice pack on the injury as a precaution”,
“an insurance policy is a good safeguard”,
“we let our guard down” (n)guard(American football) a position on the line of scrimmage between the center and the tackles“guards must be good blockers” (n)guarda position on a basketball team (n)guarda soldier who is a member of a unit called ‘the guard’ or ‘guards’ Verbs
(v)guardto keep watch over“there would be men guarding the horses” (v)guard, wardwatch over or shield from danger or harm; protect“guard my possessions while I'm away” (v)defend, guard, holdprotect against a challenge or attack“Hold that position behind the trees!”,
“Hold the bridge against the enemy's attacks” (v)guardtake precautions in order to avoid some unwanted consequence“guard against becoming too friendly with the staff”,
“guard against infection”