protective secretion of the mucous membranes; in the gut it lubricates the passage of food and protects the epithelial cells; in the nose and throat and lungs it can make it difficult for bacteria to penetrate the body through the epithelium
gradually deprive (infants and young mammals) of mother's milk; "she weaned her baby when he was 3 months old and started him on powdered milk"; "The kitten was weaned and fed by its owner with a bottle"
something or someone that causes trouble; a source of unhappiness; "washing dishes was a nuisance before we got a dish washer"; "a bit of a bother"; "he's not a friend, he's an infliction"
bear (a cost or penalty), in recompense for some action; "You'll pay for this!"; "She had to pay the penalty for speaking out rashly"; "You'll pay for this opinion later"
give money, usually in exchange for goods or services; "I paid four dollars for this sandwich"; "Pay the waitress, please"
discharge or settle; "pay a debt"; "pay an obligation"
do or give something to somebody in return; "Does she pay you for the work you are doing?"
make a compensation for; "a favor that cannot be paid back"