Formerly: †participation, intervention; dealing, management (obsolete). Now only: the action of taking part officiously or intrusively in the affairs…

The action of involving, entwining, or entangling; the condition of being involved, entangled, twisted together, intimately connected or combined…

Dealing, involvement; meddling, interference. Obsolete.

(a) Concerning oneself, having to do with; interference. (b) esp. Impertinent interference; meddling.

The process or fact of sharing in an action, sentiment, etc.; (now esp.) active involvement in a matter or event, esp. one in which the outcome…

The action of mash, v.1 in other senses; an act of pounding or crushing something to a pulp. Also with together, up.

‘Traffic’, intercourse, communication, dealings. Now usually in negative contexts: to have no truck with (a person or thing), etc.

A stake or interest in something; an involvement.

the fact, state, or quality of being involved.

The relation of being objectively concerned in something, by having a right or title to, a claim… Participation or share in doing something or the…

The action or process of involving; the fact of being involved; the condition of being implicated, entangled, or engaged; engagement, embarrassment…

Concern, the fact of being concerned with. Now somewhat archaic.

The action of immixing or mixing up; intimate mixture, commingling; the fact of being ‘mixed up’ or involved (in something).

The action of involving or fact of being involved; implicit comprehension or inclusion; implication; also, quasi-concrete, that which is involved.

a piece (also share) of the action: involvement in some lucrative or desirable activity.