(A person's) superior in age, senior. Almost exclusively in plural.

One superior or worthy of deference and reverence by reason of age; one having pre-eminence in dignity by priority of election, appointment, etc.

= B. 2, B. 3. Sometimes written as one word elderman.

A person's superior in age or rank (frequently in plural with preceding possessive adjective). Now chiefly in special uses. Cf. elder, n.3 2a.

A senior, a superior in age; usually with possessive, his ancient. Cf. French son ancien. Obs.

An influential or important person or thing in a particular field; the best (or worst), largest, or oldest example of something. Cf. daddy, n. 3b…

The senior member of a body. = dean, n.1 10. Cf. doyenne, n.2

The president, chief, or senior member of any body.

A senior or pre-eminent person in a group; the most influential or important person in a particular sphere; a doyen. Usually with of.

A man who plays a leading or important role in a group, an industry, etc.

A female doyen; the leading or senior woman in a group, society, etc.