(chemistry) A pair of hydroxyl groups in a molecule

(biochemistry) Any enzyme that catalyses the transfer of glutamic acid residues between proteins.

To mix together, to mix up; to confuse. / To mash slightly for use in a cocktail. / To dabble in mud. / To make turbid or muddy. / To think and act in a confused, aimless way.

(figuratively) A stack of needles. Represents the task of finding one thing among a large number of very similar things.