Hls

1.
Latin hoc loco situs (laid in this place)
2.
holograph letter signed

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Hlv
heavy lift vehicle
Hm
1. hectometer; hectometers. 1. Hispanic male. [hmm] /hmm/ interjection 1. (used typically to express thoughtful absorption, hesitation, doubt, or perplexity.) 1. Her Majesty. 2. His Majesty. symbol 1. hectometre abbreviation 1. Heard and McDonald Islands abbreviation 1. His (or Her) Majesty 2. heavy metal (sense 1) 3. headmaster; headmistress /spelling pron hmmm/ interjection 1. used […]
H.M.
1. Her Majesty. 2. His Majesty.