(military) An explosive device placed in the water and intended to destroy or deter vessels.

A vehicle, device or person with the purpose of removing explosive mines (landmines or water mines).

A childminder or babysitter.

That causes the mind to boggle; that is beyond one's ability to understand or figure out.

Alternative form of close-minded

(idiomatic) The distant past beyond anyone's memory. / (idiomatic) A lengthy duration of time, longer than is readily remembered.

(idiomatic, dated) For a lengthy period of time; on numerous occasions.

(mathematics) A point on a graph (or its associated function) whose value is less than all other points near it.

(idiomatic, chiefly in the negative) To restrain oneself in a conversation by withholding some comments or using euphemisms.

(advertising) The awareness of a brand in a consumer who, without prompting, names that brand first when asked to list all the advertisements they recall seeing in a general product category over the past 30 days.