intransitive. To have knowledge, to know of (also on). Also: to know much (or little) of. Obsolete (archaic in later use).

intransitive. To have or obtain information about (†or experience of).

intransitive. To have knowledge or understanding; to engage in contemplation or reflection. Obsolete.

To have knowledge or information, to learn, of something. Obsolete.

intransitive or absol. To have knowledge (of or about something). †Also with infinitive: To know how to, to be able to (obsolete).

(a) transitive. To know (a fact, the answer to a question); also with clause as obj. (b) intransitive. To know of something.

to keep up to: to prevent from falling below (a level, standard, principle, etc.); to keep informed of. Also intransitive for reflexive.

intransitive. To have information about or knowledge of (something). Also sometimes: to be aware of (an event as having occurred); = to know of ——…

colloquial (originally U.S.). to be (or get) wise to, to be (or become) aware of; to put (one) wise (to), to inform one (of), enlighten one…

to wise up (U.S. slang): to ‘get wise’; to ‘put wise’. Frequently const. on or to. Also reflexive.

to have heard of: to have become or been made aware of (a fact, etc.) in the course of one's experience; to have heard tell of. Frequently in…

to be (or get) jerry (on, on to, to): to be aware (of); to be ‘wise’ (to); to understand.