River Boats Key Scientific Vessel Crossword Clue

• a fastener fitted to a door or drawer to keep it firmly closed

• a strand or cluster of hair

• a mechanism that detonates the charge of a gun

• enclosure consisting of a section of canal that can be closed to control the water level; used to raise or lower vessels that pass through it

• a restraint incorporated into the ignition switch to prevent the use of a vehicle by persons who do not have the key

• any wrestling hold in which some part of the opponent's body is twisted or pressured

• fasten with a lock

• keep engaged

• become rigid or immoveable

• hold in a locking position

• become engaged or intermeshed with one another

• hold fast (in a certain state)

• place in a place where something cannot be removed or someone cannot escape

• pass by means through a lock in a waterway

• build locks in order to facilitate the navigation of vessels

• trying something to find out about it

• any standardized procedure for measuring sensitivity or memory or intelligence or aptitude or personality etc

• a set of questions or exercises evaluating skill or knowledge

• the act of undergoing testing

• the act of testing something

• a hard outer covering as of some amoebas and sea urchins

• put to the test, as for its quality, or give experimental use to

• test or examine for the presence of disease or infection

• examine someone's knowledge of something

• show a certain characteristic when tested

• achieve a certain score or rating on a test

• determine the presence or properties of (a substance)

• undergo a test