to attach (someone or something) to something with a string, rope, etc.
to pass (something, such as a string, ribbon, or rope) around itself in a way that attaches it to something or holds it in place : to make a knot or bow in (something) —often + to —sometimes used figuratively
to close or hold (something) with a string, rope, etc., that is attached to it or wrapped around it
a set of questions or problems that are designed to measure a person's knowledge, skills, or abilities
a careful study of a part of the body or of a substance taken from the body
a careful study of a small amount of water, soil, air, etc., in order to see if its quality is good, to find out if it contains a dangerous substance, etc.