IN'SULATE, verb transitive [Latin insula, an isle.] To place in a detached situation, or in a state to have no communication with surrounding objects. 1. In architecture, to set a column alone or not contiguous to a wall. 2. In electrical experiments, to place on a non-conducting substance, or in a situation to prevent communication with the earth. 3. To make an isle. [Little used.]
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI