Verb
1. impinge or infringe upon;
"This impinges on my rights as an individual""This matter entrenches on other domains"2. fortify by surrounding with trenches;
"He trenched his military camp"3. cut or carve deeply into;
"letters trenched into the stone"4. set, plant, or bury in a trench;
"trench the fallen soldiers""trench the vegetables"5. cut a trench in, as for drainage;
"ditch the land to drain it""trench the fields"6. dig a trench or trenches;
"The National Guardsmen were sent out to trench"