inter|lock.
VERB
1.(of two or more things) engage with each other by overlapping or by the fitting together of projections and recesses:
"their fingers interlocked" ·
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synonyms: engage · interconnect · interlink · mesh · intermesh ·
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NOUN
1.a device or mechanism for connecting or coordinating the function of different components.
"a safety interlock to stop the blades spinning"
2.a fabric knitted with closely interlocking stitches allowing it to stretch.
"a dress in soft interlock" ·
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