Breathe down someones neck
surveillance
"At bay" means "at a safe distance." The phrase means that someone or something is holding you off, keeping you from getting close to them.
Nothing. I believe you may have misheard the phrase close-FISTED, which means what it sounds like - the person has figuratively closed their hand into a fist to keep hold of what they own. They are being a tightwad or holding onto their money.
The expression 'mine to keep' means that a certain object is already owned by the person. It can be clearly explained using the phrase 'finders keepers, losers weepers'. Once a person finds something, it is his for the keeping.
It means someone or something was holding on to your heel and keeping you from moving forward.
Pull the plug is a phrase that means to stop something. Put a sock in it is a phrase that means tells a noisy person to be quiet. Pulling your leg is a phrase that means tricking someone as a joke.
for me is being attractive person
It means to be a nice person
This means that a person a has enough.
Litteraly, it means "the heart", but it is often used as an affectionate phrase towards a person of whom one is close with, often used between lovers or inside the family.
The phrase "sleeping with the enemy" shares the same meaning as "keep your friends close, and your enemies closer". This phrase means to keep your enemies as close as possible.
The phrase close combat typically means combat which occurs at very short range. Typically in modern times this is where close quarters combat and hand-to-hand combat training is vital for the armed forces.