Part of Speech:  Verb

Definition:  Investigate; To look into.

Definition: Source: Oxford Dictionary

Found in the Poem, “My Boy Willie” by Anonymous, Line 12: “That I might enquire for my sailor boy”

The definition of the word “Enquire” was used as the speaker was looking for the sailor and instead of inquire they used “Enquire”. Could mean that the speaker can’t find him or wants to know something about him.