(Scotland) Stupid or senile.

(Scotland) A dotard.

(intransitive, usually with on) To be weakly or foolishly fond of somebody. / (intransitive, archaic) To act in a foolish manner; to be senile.

(Ireland) A darling, a cutie. / (obsolete) An imbecile; a dotard.

Synonym of dotard (“old person with impaired intellect”) / Synonym of dotard (“one who dotes on another, showing excessive fondness”)

(archaic) third-person singular simple present indicative form of do

(oncology) The vitamin biotin labelled with radioactive (yttrium-90), used in the treatment of cancer, where it seeks out tumor cells that have been targeted by an antibody linked to streptavidin and kills them.

(Britain, colloquial) Mildly insane or eccentric; often, senile. / (UK, dated) Having an unsteady gait.

Having many dots.

(MLE) A shotgun.