Dictionary definitions
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underline
From The Collaborative International Dictionary of English v.0.48:
Underline \Un`der*line"\, v. t.
1. To mark a line below, as words; to underscore.
[1913 Webster]
2. To influence secretly. [Obs.] --Sir H. Wotton.
[1913 Webster]
3. Emphasize or call attention to; highlight; as, Long waits
at the emergency room underline the need for a larger
hospital.
.
[JG]

