Top Definition
the act of sex between older persons and those specifically those who have suffered hip replacements or other movement difficulties. Tortoising can involve the use of a zimmer frame to create the shell in particularly active relationships.
My gran been tortoising her fuck buddy again he is in his 90s!
by gurgi July 13, 2009
the act of emotionally withdrawing oneself from a situation, showing no emotions, avoiding emotions or feeling
He is always tortoising; I can't ever tell how he feels.
by Uwish U. Knewme May 11, 2010
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