(organic chemistry) That part of a molecule attached to some core structure; a radical.

(audio) To use auxiliary audio input in that manner.

An area where lumber is sorted and piled at a sawmill.

(biochemistry) a chain of amino acids, linked by peptide bonds, that forms the 'backbone' of proteins

A group of convicts chained together to work outside the confines of a prison. / (cycling) A group of cyclists riding in a close-knit formation akin to a road race, normally for the purposes of training.

One who smokes continuously, by lighting one cigarette when they finish another, as in a chain. / One who habitually smokes a lot.

To fall behind relative to others. / To unwittingly hold up progress. / To deliberately hold up progress by acting slowly.

present participle of drag the chain

plural of chain letter

A letter that can be mailed successively to different recipients, with each recipient ostensibly (but sometimes sarcastically) being instructed in the body of the letter to mail the letter to another person or persons.