#1 trench n. a ditch dug as a fortification having a parapet of the excavated earth. wn
#2 trench v. [impinge, encroach, entrench] impinge or infringe upon; "This impinges on my rights as an individual"; "This matter entrenches on other domains". wn
#3 trench n. [deep, oceanic abyss] a long steep-sided depression in the ocean floor. wn
#4 trench v. fortify by surrounding with trenches; "He trenched his military camp". wn
#5 trench n. any long ditch cut in the ground. wn
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